Best Portable Cell Phone Power Banks
MultiProtect Safety System Surge protection, short circuit protection and more advanced safety features keep you and your devices safe. For Optimal Use: Use the included cable, your original cable or a third-party certified one (such as MFi). Compatible with the new 12 inch MacBook 2015 (USB-C to USB 2.0 cable needed), Apple and Android smartphones, tablets (including the Nexus 7) and other USB-charged devices except for the iPod nano, iPod Classic, HP TouchPad, Dell Venue 11 Pro, Asus tablets and some GPS and Bluetooth devices. What You Get: Anker PowerCore 20100 Portable Charger, Micro USB cable, travel pouch, welcome guide, our fan-favorite 18-month warranty and friendly customer service.
Reviews
Find Best Price at Amazon"After fully charging the Anker PowerCore 20100, I ended up running my own personal test to see just how many full charges I could get on my Samsung Galaxy S7. (1 Blinking light). The next morning (on day 6), I tried recharging the phone again while the 1 remaining light on the Anker Power bank was still blinking ....."
"Anker PowerCore 20100 – Review by a Frequent Flyer Business Traveler. Most of us would agree that we all carry or own multiple devices in this day and age and they all need frequent (1x /2x/3x times a day) recharging after continuous usage. I obviously own couple of power banks to charge my phone during my flights or at the airports. I always thought it would be great if one these days they made a power bank which could charge all my devices few times and it wasn’t so heavy. The four status LEDs are great and pretty accurate to show the status of battery charge left. Bullet Point Analysis: ------------------------------------. Great For. ------------------------------------. Business Travelers. Families on vacation. Busy Moms & Dads on the go. Considerate co-workers who want to help colleagues with their charging needs at office =). College Students on long class schedules. International travelers. ------------------------------------. The Pros. ------------------------------------. Great form factor for the amount of battery power it packs. Power capacity to charge your phone throughout the week (6-7 times). Accurate charging status and battery level LEDs. Automatic power off. PowerIQ feature to automatically route power to the device plugged in. Excellent value for cost. ------------------------------------. The Cons. ------------------------------------. None I can think of for what it promises. May be charge my laptop too =). ------------------------------------. The Specs. ------------------------------------. Dimensions: 6.5 X 2.5 X 1. Output: 2 USB/ 4.8A total. Input: 5V / 2A. About 1” bigger than Samsung S6 and 1.5” bigger than iPhone6. Substantially lighter than any other power bank with same capacity in the market. Capacity is as promised. You can use your existing cell phone charger to charge the device. ------------------------------------. Summary. ------------------------------------. I think it’s established that in today’s digital and multi device environment our devices are power-hungry at all times. Phones and tablets are more advanced but they need battery juice and manufacturers have conveniently taken spare battery option out of the devices e.g. Samsung. This Anker Power Bank makes perfect sense to carry for all your smart phone and tablet charging needs."
"EDIT 04/2016: Anker reached out to me in private over a month ago, shipped me a new PowerCore free of charge and I confirmed that it was properly putting out over 1A. In addition to this, they replaced an older model PowerCore that had stopped working and I assumed was out of warranty, so I had taken it apart to diagnose what was wrong with it (bad capacitor)."
From ANKER, America's Leading USB Charging Brand • Faster and safer charging with our advanced technology. • 10 million+ happy users and counting. High-speed-Charging Technology Anker's exclusive PowerIQ and VoltageBoost technologies combine to ensure the fastest possible charge up to 2.4 amps. Notes: • Please use the original Apple charging cable (not included) to charge Apple products. What You Get: Anker PowerCore 10000 portable charger, Micro USB cable, travel pouch, welcome guide, our worry-free 18-month warranty and friendly customer service.
Reviews
Find Best Price at Amazon"I travel quite a bit and haven't printed a boarding pass in quite a while... As the practice of e-boarding passes continues to increase, so will the instances of anxiety due to a low battery while waiting in the security line or at the gate! I recently purchased and reviewed the Lumsing Ultrathin Portable 3-Port USB Charger 10000mAh... This thing was great except is made a high pitch noise when it charged another device. Cons: I actually prefer the taller/thinner form of the Lumsing which keeps the device ports easily accessible when in the inside pockets of my sports coat."
"So far, I've been able to charge my phone about 4 times from near empty to full before having to charge the power bank. The power bank itself requires at least 2 hours to charge from empty to full but once charged, your phone will charge to full in less time."
"On the left is the older 10,000mAh charger, right is the newer 20,000mAh charger, this charger in the middle. All things said, the charger worked amazingly well, much faster than the previous iteration of the 10,000mAh charger and much better than I expected. I have had an issue with an older charger with a built in cable, and while the charger was no longer available for sale Anker sent me a voucher for the full value of my charger, which I was able to use to purchase the older 10,000mAh charger you see in the photos."
"In less than six months three of us have replaced our broken micro usb cables. The Anker cables that come with the Anker power bank are run-of-the-mill at best. My point...if you're comfortable with having to replace the cable at some point (it's likely) than this is an awesome power bank."
Now upgraded with premium quality battery cells to ensure superior performance and safety. MultiProtect Safety System Surge protection, short circuit protection and more advanced safety features keep you and your devices safe. • Compatible with Apple and Android smartphones, tablets (including the Nexus 7) and other USB-charged devices except for the iPod nano, iPod Classic, HP TouchPad, LG G2, Asus tablets and some GPS and Bluetooth devices. What You Get: Anker PowerCore+ mini (3350mAh Premium Aluminum Portable Charger), Micro USB cable, travel pouch, welcome guide, our fan-favorite 18-month warranty and friendly customer service.
Reviews
Find Best Price at Amazon"Not All Batteries Are Created Equal. ***NOTE***. This review contains technical observations which I have reported to Anker. The battery I opened was verified to contain a high quality Panasonic-Sanyo NCR18650BF Lithium Ion cell, which is one of the finest cells available on the market today. - 9.99USD at Time of Review for PowerCore+ Mini in Black. Nay: - Inconsistent Fulfillment, Frequent Product Updates/Changes May Result in Order Errors and Old Product. - Inconsistent Performance of Internal DC Boost Converter Between Batteries, Affects Output Current and Capacity, Actual Available Capacity Varies Between 8.5Wh and 9.5Wh. - Possible Inconsistent Quality Control - Based on my numbers Anker deemed 2 out of 4 batteries to be possibly defective and shipped replacements (not arrived at time of this writing). In order to minimize power loss in the USB cable during whole product testing I custom-built an extra-short USB cable using 22AWG conductors, meaning that all of my numbers will be best-case scenarios for each of the batteries I tested. This was the case for me when I ordered two PowerCore+ Mini's in Black last week, and two Astro Mini's in Black showed up, although they were so close to the PowerCore+ in appearance (in fact, they are identical in appearance) that I didn't even notice the error until a couple of days later when during testing I noticed that the tail cap of the battery had "Astro Mini" written on it. At time of this writing both the Astro Mini and the PowerCore+ Mini are listed as separate products on Anker's website, and share the same capacity ratings, but have some minor published differences. During testing of the Astro Mini's I observed some troubling discrepancies that prompted me to order additional batteries. Anker's packaging has always been efficient, easy-to open, and well-thought, and these batteries were no exception. Each battery came with a short Anker USB Micro cable, a tasteful carrying case, and a short and sweet support pamphlet that tells you how to get questions answered or stuff fixed. Each battery's USB port is also covered with a sticker to remind you that the battery automatically cuts power to the port to conserve energy when not in use, and that a quick tap of the small button in the corner is all you need to get the juice flowing. Well, just do a quick search for "Lithium Ion Fire" on YouTube sometime and you'll see quickly why the FAA restricts how much lithium you can carry on an aircraft in the form of batteries, and why most major couriers won't allow you to ship Lithium batteries via Air Mail unless you have a hazmat contract with them. Serial numbers on devices this cheap are the hallmark of a manufacturer that cares because while you are unlikely to file a police report for a stolen ten dollar battery, Anker certainly wants to know which manufacturing batches are having problems, if any. ***WARNING***. I don't pull punches with batteries or battery vendors, and I didn't intend to judge this battery by its casing alone. Eventually I was able to saw off the rest of the casing without putting a scratch on the battery cell itself, and was able to reveal a Panasonic-Sanyo NCR18650BF cell soldered to a small DC boost converter PCB and USB ports. The NCR18650BF cell is a beauty of a battery cell, and represents one of the highest capacity and quality cells available on the market today. Every battery cell has two capacities. What this means is that "12.06Wh" capacity that you see on the product is only true for a couple of weeks right after Panasonic made the battery cells. By the time those cells are stored, sold to Anker, then stored again, used in manufacturing, stored again, shipped to Amazon, stored again, and then eventually shipped to you, these cells have a usable capacity of around 11.52Wh to 11.70Wh, which is actually what is reflected in the official datasheet for the NCR18650BF. I ran the NCR18650BF cell just by itself against a load of .2C or .67A and a cut-off voltage of 2.50V, the same test that Panasonic uses to get their original rating, and got a capacity of 11.4834Wh, which is just slightly under the "Minimum" rating for the cell, but it's close enough that I can't fault Anker for it. This is the real-world, best-case, available capacity of the cell before it goes through any other losses, such as those introduced by the DC/DC conversion up to 5V, before the voltage drop in your USB cable, and before the conversion losses in your device as it charges the internal battery. The harder you run the battery, the lower the available capacity of the cell is. To determine how hard the USB circuit runs the battery and look for efficiency losses, I removed the battery and connected the circuit to the monitored output on the lab power supply. Using the electronic load I applied a 5V 1A load to the USB port and monitored current draw from the power supply: USB Load Battery Load DC Boost Efficiency. 5.000V @ 1A = 5.00W 1.349A @ 4.2V = 5.67W 88.2%. 4.991V @ 1A = 4.99W 1.637A @ 3.6V = 5.89W 84.7%. 4.988V @ 1A = 4.99W 1.825A @ 3.2V = 6.06W 82.3%. Anker claims 90% efficiency with their DC converters, but since they do not publish their testing process or procedure it is impossible to know under what ideal conditions they performed their tests. Based on conversations with Anker, they are constantly updating and making changes to their designs, which is great, but because these changes aren't publicly tracked and because the batteries are sealed, there is no simple way to know what the characteristics of your battery are. It bears noting that so far all of the tests that we have discussed were performed on a battery that was labeled as "Astro Mini" and it is possible that my battery was manufactured during the early stages of the production shift. That capacity will be lower when drained faster and as you can see above, in order to charge your device at 5V @ 1A, the drain on the battery cell is more than twice that. Since modern lithium cells have a stated nominal voltage of 3.6V, I used the current draw of 1.637A and cut-off voltage of 2.50V to re-assess the capacity of the bare NCR18650BF cell to determine the actual available capacity at the higher drain rate. At the end of the day, what really matters is how the customer will use the battery, so let's get to... [Real-World Capacity and Performance]. These tests were all performed with the batteries fully sealed, assembled, and as they came directly from Amazon. In total, I tested four batteries, two of which were marked as "Astro Mini", and two of which were marked "PowerCore+ Mini", all of which were marked 3350mAh/12.06Wh. They were all designated Units A through D. For the testing procedure, I charged each battery through the USB Micro port per the instructions from Anker until they were full. I then connected each battery to the electronic load and programmed the load for a constant current draw of 1.000A, and measured the output voltage ten times per second until the battery died. Item Received Item Model Available Capacity. Astro Mini (Black) (Unit A) A1105 8.769Wh. Astro Mini (Black) (Unit B) A1105 9.345Wh. PowerCore+ Mini (Silver) (Unit C) A1104 8.607Wh. PowerCore+ Mini (Black) (Unit D) A1104 9.578Wh. The difference in capacity between the best-performing battery and the worst-performing battery was over 11%!!! My notes regarding each unit tested are as follows: Astro Mini (Black) (Unit A): Discharge remained flat and stable until the battery was approximately 75% depleted, at which point the voltage became unstable and dropped significantly. Based on the erratic behavior of the drop I believe the boost circuit began to overheat as it tried to cope with the lower input voltage of the battery cell. Based on conversations with Anker this is likely due to Anker's "Voltage Boost" feature which provides a slightly higher output voltage in order to compensate for the loss in the USB cable. While this does provide a slightly faster charge, it also results in a slightly lower available battery capacity, although this small discrepancy alone does not account for the near 1Wh difference between Units C and D. PowerCore+ Mini (Black) (Unit D): Out of all four batteries, Unit D exhibited the best performance. The output was not only super-flat through the discharge cycle, the available capacity tipped the scales at 9.578Wh @ 1A draw, which was better than any other of the batteries that I tested. I would also like to make clear that charge rate and battery capacity are completely independent of each other. I ordered four of the same battery, and ended up with four batteries that performed completely differently, which brings me to... [Anker's Response]. On 11/23/2015 I forwarded my results to Anker Support along with relevant purchase dates, serial numbers, and other information they requested. It means you're potentially throwing away vast amounts of battery capacity in your external battery pack by using an inadequate cable."
"Friends, We are gathered here today to celebrate the life of our Anker PowerCore+. I noticed my phone was near dead and so I hooked up my trusty Anker and went about my day. #sadface. Anker is survived by his older brother (also a PowerCore+), who was purchased in September and is still going strong."
"Fully charged this will bring my HTC EVO 4G LTE up from grave to full pretty close to twice. It will charge a iempire 5s grave to full twice with a bit left over."
"I was thinking of ideas to protect these from water and debris in my pocket or backpack."
"See my images). - Comes with a nice little bag that can hold the battery as well as a cable. (Note that it comes with a USB > Micro USB cable to charge the battery but you need to use your USB > X cable where X is the type of connector your phone or electronic device uses. The competitor (Jackery® Mini Premium) has 4 lights to show the amount of battery left, but on the other hand it's square so it's harder to carry in your pocket and that's the reason I got the Anker®. See my images for more details:"
Best Portable Cell Phone Power Banks
MultiProtect Safety System Surge protection, short circuit protection and more advanced safety features keep you and your devices safe. For Optimal Use: Use the included cable, your original cable or a third-party certified one (such as MFi). Compatible with the new 12 inch MacBook 2015 (USB-C to USB 2.0 cable needed), Apple and Android smartphones, tablets (including the Nexus 7) and other USB-charged devices except for the iPod nano, iPod Classic, HP TouchPad, Dell Venue 11 Pro, Asus tablets and some GPS and Bluetooth devices. What You Get: Anker PowerCore 20100 Portable Charger, Micro USB cable, travel pouch, welcome guide, our fan-favorite 18-month warranty and friendly customer service.
Reviews
Find Best Price at Amazon"After fully charging the Anker PowerCore 20100, I ended up running my own personal test to see just how many full charges I could get on my Samsung Galaxy S7. (1 Blinking light). The next morning (on day 6), I tried recharging the phone again while the 1 remaining light on the Anker Power bank was still blinking ....."
"Anker PowerCore 20100 – Review by a Frequent Flyer Business Traveler. Most of us would agree that we all carry or own multiple devices in this day and age and they all need frequent (1x /2x/3x times a day) recharging after continuous usage. I obviously own couple of power banks to charge my phone during my flights or at the airports. I always thought it would be great if one these days they made a power bank which could charge all my devices few times and it wasn’t so heavy. The four status LEDs are great and pretty accurate to show the status of battery charge left. Bullet Point Analysis: ------------------------------------. Great For. ------------------------------------. Business Travelers. Families on vacation. Busy Moms & Dads on the go. Considerate co-workers who want to help colleagues with their charging needs at office =). College Students on long class schedules. International travelers. ------------------------------------. The Pros. ------------------------------------. Great form factor for the amount of battery power it packs. Power capacity to charge your phone throughout the week (6-7 times). Accurate charging status and battery level LEDs. Automatic power off. PowerIQ feature to automatically route power to the device plugged in. Excellent value for cost. ------------------------------------. The Cons. ------------------------------------. None I can think of for what it promises. May be charge my laptop too =). ------------------------------------. The Specs. ------------------------------------. Dimensions: 6.5 X 2.5 X 1. Output: 2 USB/ 4.8A total. Input: 5V / 2A. About 1” bigger than Samsung S6 and 1.5” bigger than iPhone6. Substantially lighter than any other power bank with same capacity in the market. Capacity is as promised. You can use your existing cell phone charger to charge the device. ------------------------------------. Summary. ------------------------------------. I think it’s established that in today’s digital and multi device environment our devices are power-hungry at all times. Phones and tablets are more advanced but they need battery juice and manufacturers have conveniently taken spare battery option out of the devices e.g. Samsung. This Anker Power Bank makes perfect sense to carry for all your smart phone and tablet charging needs."
"EDIT 04/2016: Anker reached out to me in private over a month ago, shipped me a new PowerCore free of charge and I confirmed that it was properly putting out over 1A. In addition to this, they replaced an older model PowerCore that had stopped working and I assumed was out of warranty, so I had taken it apart to diagnose what was wrong with it (bad capacitor)."
Best PlayStation Vita Chargers
Description 10 times for iPhone, this Vinsic 20000mAh Ultra-slim Power Bank is designed with two USB output ports will quickly and effectively help to solve the low power problem for your digital device while traveling out. Fast & Effective The super high capacity 20000mAh power bank will conveniently solve the low power problem for your digital device while on-the-go. Package includes 1 x Vinsic® 20000mAh Power Bank. 1 x USB Charging Cable (iPhone cable not included). 5v 3.1A, Dual-port usb charger, it is universal fits for iPhone 6 5S/5/4S/4, iPad, iPod, Samsung devices, HTC phones, tablet PCs, digital cameras, game consoles and MP3/MP4 players, etc.
Reviews
Find Best Price at Amazon"It is a bit bigger than most of the standard size external battery charger on the market, but it is expected due to the high capacity. This portable charger comes with 2 fast charging (5V/2.4A max) USB output ports."
"It can charge my phone 5 times no problem and still have juice to charge my tablet."
"Easily readable display shows how much power is left in the power bank."
"You get 2 full charges per power bank."
"I got this power bank for my sister, it is very thin but also very large."
"Another, unintended use of the Vinsic, was on a Disney World vacation, was the family would pack their iPhone USB cables, I packed the Android USB cables in my backpack, and phones could charge while we walked around or had lunch."
"5 STAR PRODUCT & 5 STAR TEAM!"
"I love this battery, after charging an Asus Transformer tablet and dock to full, it still had enough juice to charge my S6 Edge to full capacity, and about 25% on my iphone 6."
Best Photographic Lighting Power Packs
The Lifeline of Your Mobile Life With a high 12V/10A car cigarette lighter output, the jump starter powers your car accessories and appliances of up to 120W power to provide extra convenience and sustainability for your life on the road. What’s in the Box: • 1x RAVPower Car Jump Starter (RP-PB053). • 1x Home Power Adapter. • 1x Car Charger. • 1x Jump Cable. • 1x User Guide. • 1x USB Charging Cable (short). • 1x USB Charging Cable (long). Phone and Tablet Charging: Experience fast and simultaneous charging for smartphones and tablets with dual iSmart USB ports (5V/1.5A and 5V/2.1A); 18000mAh battery charges iPhone 7 up to 6.5x, Galaxy S7 up to 4x, iPad Mini up to 2x.
Reviews
Find Best Price at Amazon"I have a much larger external battery, which works when I might have a long time in between outlets, like international traveling. The flashlight is pretty good, and I wouldn't feel so stressed about using it for an extended period of time."
"My RAV had been fully charged a couple of weeks ago so I grabbed it and plugged in the Fire Phone. The RAV was now showing red when power level was checked (by pressing the button once) but the flashlight still worked like a champ even after pumping all that juice into my phone."
"My kids like to use their phones more than they like charging them, so they end up with dead batteries when they are leaving the house to go to a friends or somewhere else that I want to be able to get a hold of them."
"I originally had stated that the button to turn on the flash light is easy to activate and with the device roaming in my purse, the button could easy get pushed and run down the battery."
"The charger comes with a micro USB cable to charge it and it charges from empty to full power in 4 hours maximum."
"I will be charging RAVPower from Sinewave and then charge iPhone, etc from RAVPower."
"and when on, a light informs you if it needs charging (usb turns red) and if its charged (usb turns green), and I'm still learning what other colors mean."
Best Tablet Chargers & Adapters
Now upgraded with premium quality battery cells to ensure superior performance and safety. MultiProtect Safety System Surge protection, short circuit protection and more advanced safety features keep you and your devices safe. • Compatible with Apple and Android smartphones, tablets (including the Nexus 7) and other USB-charged devices except for the iPod nano, iPod Classic, HP TouchPad, LG G2, Asus tablets and some GPS and Bluetooth devices. What You Get: Anker PowerCore+ mini (3350mAh Premium Aluminum Portable Charger), Micro USB cable, travel pouch, welcome guide, our fan-favorite 18-month warranty and friendly customer service.
Reviews
Find Best Price at Amazon"Not All Batteries Are Created Equal. ***NOTE***. This review contains technical observations which I have reported to Anker. The battery I opened was verified to contain a high quality Panasonic-Sanyo NCR18650BF Lithium Ion cell, which is one of the finest cells available on the market today. - 9.99USD at Time of Review for PowerCore+ Mini in Black. Nay: - Inconsistent Fulfillment, Frequent Product Updates/Changes May Result in Order Errors and Old Product. - Inconsistent Performance of Internal DC Boost Converter Between Batteries, Affects Output Current and Capacity, Actual Available Capacity Varies Between 8.5Wh and 9.5Wh. - Possible Inconsistent Quality Control - Based on my numbers Anker deemed 2 out of 4 batteries to be possibly defective and shipped replacements (not arrived at time of this writing). In order to minimize power loss in the USB cable during whole product testing I custom-built an extra-short USB cable using 22AWG conductors, meaning that all of my numbers will be best-case scenarios for each of the batteries I tested. This was the case for me when I ordered two PowerCore+ Mini's in Black last week, and two Astro Mini's in Black showed up, although they were so close to the PowerCore+ in appearance (in fact, they are identical in appearance) that I didn't even notice the error until a couple of days later when during testing I noticed that the tail cap of the battery had "Astro Mini" written on it. At time of this writing both the Astro Mini and the PowerCore+ Mini are listed as separate products on Anker's website, and share the same capacity ratings, but have some minor published differences. During testing of the Astro Mini's I observed some troubling discrepancies that prompted me to order additional batteries. Anker's packaging has always been efficient, easy-to open, and well-thought, and these batteries were no exception. Each battery came with a short Anker USB Micro cable, a tasteful carrying case, and a short and sweet support pamphlet that tells you how to get questions answered or stuff fixed. Each battery's USB port is also covered with a sticker to remind you that the battery automatically cuts power to the port to conserve energy when not in use, and that a quick tap of the small button in the corner is all you need to get the juice flowing. Well, just do a quick search for "Lithium Ion Fire" on YouTube sometime and you'll see quickly why the FAA restricts how much lithium you can carry on an aircraft in the form of batteries, and why most major couriers won't allow you to ship Lithium batteries via Air Mail unless you have a hazmat contract with them. Serial numbers on devices this cheap are the hallmark of a manufacturer that cares because while you are unlikely to file a police report for a stolen ten dollar battery, Anker certainly wants to know which manufacturing batches are having problems, if any. ***WARNING***. I don't pull punches with batteries or battery vendors, and I didn't intend to judge this battery by its casing alone. Eventually I was able to saw off the rest of the casing without putting a scratch on the battery cell itself, and was able to reveal a Panasonic-Sanyo NCR18650BF cell soldered to a small DC boost converter PCB and USB ports. The NCR18650BF cell is a beauty of a battery cell, and represents one of the highest capacity and quality cells available on the market today. Every battery cell has two capacities. What this means is that "12.06Wh" capacity that you see on the product is only true for a couple of weeks right after Panasonic made the battery cells. By the time those cells are stored, sold to Anker, then stored again, used in manufacturing, stored again, shipped to Amazon, stored again, and then eventually shipped to you, these cells have a usable capacity of around 11.52Wh to 11.70Wh, which is actually what is reflected in the official datasheet for the NCR18650BF. I ran the NCR18650BF cell just by itself against a load of .2C or .67A and a cut-off voltage of 2.50V, the same test that Panasonic uses to get their original rating, and got a capacity of 11.4834Wh, which is just slightly under the "Minimum" rating for the cell, but it's close enough that I can't fault Anker for it. This is the real-world, best-case, available capacity of the cell before it goes through any other losses, such as those introduced by the DC/DC conversion up to 5V, before the voltage drop in your USB cable, and before the conversion losses in your device as it charges the internal battery. The harder you run the battery, the lower the available capacity of the cell is. To determine how hard the USB circuit runs the battery and look for efficiency losses, I removed the battery and connected the circuit to the monitored output on the lab power supply. Using the electronic load I applied a 5V 1A load to the USB port and monitored current draw from the power supply: USB Load Battery Load DC Boost Efficiency. 5.000V @ 1A = 5.00W 1.349A @ 4.2V = 5.67W 88.2%. 4.991V @ 1A = 4.99W 1.637A @ 3.6V = 5.89W 84.7%. 4.988V @ 1A = 4.99W 1.825A @ 3.2V = 6.06W 82.3%. Anker claims 90% efficiency with their DC converters, but since they do not publish their testing process or procedure it is impossible to know under what ideal conditions they performed their tests. Based on conversations with Anker, they are constantly updating and making changes to their designs, which is great, but because these changes aren't publicly tracked and because the batteries are sealed, there is no simple way to know what the characteristics of your battery are. It bears noting that so far all of the tests that we have discussed were performed on a battery that was labeled as "Astro Mini" and it is possible that my battery was manufactured during the early stages of the production shift. That capacity will be lower when drained faster and as you can see above, in order to charge your device at 5V @ 1A, the drain on the battery cell is more than twice that. Since modern lithium cells have a stated nominal voltage of 3.6V, I used the current draw of 1.637A and cut-off voltage of 2.50V to re-assess the capacity of the bare NCR18650BF cell to determine the actual available capacity at the higher drain rate. At the end of the day, what really matters is how the customer will use the battery, so let's get to... [Real-World Capacity and Performance]. These tests were all performed with the batteries fully sealed, assembled, and as they came directly from Amazon. In total, I tested four batteries, two of which were marked as "Astro Mini", and two of which were marked "PowerCore+ Mini", all of which were marked 3350mAh/12.06Wh. They were all designated Units A through D. For the testing procedure, I charged each battery through the USB Micro port per the instructions from Anker until they were full. I then connected each battery to the electronic load and programmed the load for a constant current draw of 1.000A, and measured the output voltage ten times per second until the battery died. Item Received Item Model Available Capacity. Astro Mini (Black) (Unit A) A1105 8.769Wh. Astro Mini (Black) (Unit B) A1105 9.345Wh. PowerCore+ Mini (Silver) (Unit C) A1104 8.607Wh. PowerCore+ Mini (Black) (Unit D) A1104 9.578Wh. The difference in capacity between the best-performing battery and the worst-performing battery was over 11%!!! My notes regarding each unit tested are as follows: Astro Mini (Black) (Unit A): Discharge remained flat and stable until the battery was approximately 75% depleted, at which point the voltage became unstable and dropped significantly. Based on the erratic behavior of the drop I believe the boost circuit began to overheat as it tried to cope with the lower input voltage of the battery cell. Based on conversations with Anker this is likely due to Anker's "Voltage Boost" feature which provides a slightly higher output voltage in order to compensate for the loss in the USB cable. While this does provide a slightly faster charge, it also results in a slightly lower available battery capacity, although this small discrepancy alone does not account for the near 1Wh difference between Units C and D. PowerCore+ Mini (Black) (Unit D): Out of all four batteries, Unit D exhibited the best performance. The output was not only super-flat through the discharge cycle, the available capacity tipped the scales at 9.578Wh @ 1A draw, which was better than any other of the batteries that I tested. I would also like to make clear that charge rate and battery capacity are completely independent of each other. I ordered four of the same battery, and ended up with four batteries that performed completely differently, which brings me to... [Anker's Response]. On 11/23/2015 I forwarded my results to Anker Support along with relevant purchase dates, serial numbers, and other information they requested. It means you're potentially throwing away vast amounts of battery capacity in your external battery pack by using an inadequate cable."
"Friends, We are gathered here today to celebrate the life of our Anker PowerCore+. I noticed my phone was near dead and so I hooked up my trusty Anker and went about my day. #sadface. Anker is survived by his older brother (also a PowerCore+), who was purchased in September and is still going strong."
"Fully charged this will bring my HTC EVO 4G LTE up from grave to full pretty close to twice. It will charge a iempire 5s grave to full twice with a bit left over."
"I was thinking of ideas to protect these from water and debris in my pocket or backpack."
"See my images). - Comes with a nice little bag that can hold the battery as well as a cable. (Note that it comes with a USB > Micro USB cable to charge the battery but you need to use your USB > X cable where X is the type of connector your phone or electronic device uses. The competitor (Jackery® Mini Premium) has 4 lights to show the amount of battery left, but on the other hand it's square so it's harder to carry in your pocket and that's the reason I got the Anker®. See my images for more details:"
Best PlayStation Vita Batteries
6000mAh Fastest Portable External Battery Charger High quality standard through ports charges all your devices - just plugging any gadgets in at once and enjoy the fully-intended Full Speed charging. Wide compatibility iPhone 6, 6 Plus, 7, 7 Plus, 8, 8 Plus, iPhone X. Apple iPads, Samsung Galaxy Tab 2 3 4, Google Nexus 7 10 and more. Apple iPhones, iPods, Samsung Galaxy Phones, Blackberry, Moto, Nokia, LG, Sony, Gopro and more. Samsung Galaxy Tab 2 / Note 10.1 / Note. Bluetooth speaker, Headset, Mp3, Digital camera, Mp4, GPS, PSP and other USB charged devices. MAXIMIZES COMPATIBILITY with Android, Apple or other devices - Compatible with iPhone X, 8 8Plus, 7 7Plus 6 5s; iPad Air; Samsung S8 S7 S6 S5; Note, Nexus, HTC, Motorola, Nokia and more, so basically it's More than just a iPhone Charger or Apple Charger but it intelligently identifies each connected device and speaks its language - guaranteeing the fastest charge time for most cell phones.
Reviews
Find Best Price at Amazon"I remember this because I was skiing, had it and my phone in my jacket pocket, and the first day it charged my phone but the second day when I plugged it in my phone did not come back to life."
"With a convienent built in LED light and easy to read LED power indicators, this little brute provided a full charge for my iphone 5 twice and still had power to spare."
"Recently the battery life on mine has really decreased, so I contacted gembonics and after some troubleshooting, they decided to just send me a new one free of charge!"
"The charging cable that came with the charger does not work well with our phones and gembonics recommends using your factory charging cable with their device anyway."
"I love this product so much I purchased two additional portable charger."
"I bought similar chargers from 2 different sellers, and 2 different brands of chargers."
"got this for the granddaughter for christmas and it goes everywhere with her, quite literally...she uses it constantly for a number of gadgets and has asked for another for her birthday...for that matter i may just buy a bunch of them and hand them out as gifts through the year...i could use one, hubby wants one...very!"
"I take great shape of my electronics because I can't afford to continue to replace them."
Best Cell Phone Battery Charger Cases
Use original lightning cable to charge your iPhone 6/6S at first, then transfer to charge the battery case automatically, as well as sync your iPhone to iTunes without removing the battery case. Please use original apple lightning cable and wall adapter(. 5V/1A. ONLY. ) to charge smiphee iphone 6&6s battery case,Smiphee iphone 6&6s battery case. Does Not Support Car Charger, High Voltage or QuickCharge deployed adapters. . 【THIN AND LIGHTWEIGHT】: (IMPORTANT NOTE: Smiphee iPhone 6 &6s battery case does not support Car Charger, High Voltage or QuickCharge deployed adapters)Smiphee iPhone 6/6s battery case is one of the slimmest charging case, adding only 0.18 inch and 2.22 oz to your iPhone 6/6s, thinner and thinner,feel like feather.
Reviews
Find Best Price at Amazon"I was looking for a battery case that also used exclusively lightning cable instead of micro USB (and didn't want to pay for Apples). Now for the details: Style: sleek, gradient blue color, covers the apple logo due to its battery. 5/5 (my subjective opinion :). Feel: smooth but is grippy enough to hold comfortably. 5/5. Installation: easy just remove top piece - slide in to case- put top piece back on (it doesn't easily come off unless you pull out the side) 5/5. Battery feature: so far so great. The button when clicked shows how much battery is left, when clicked and held for 2 secs it starts charging the phone and stops charging the phone. Also keep an eye on that top cover piece, the durability, and protection it provides."
"It looks very nice and doesn't generate a much heat if any when I charge my phone with the case on using a 5W charger."
"My iPhone is over 2 1/2 years old and the battery, on my phone, goes down quickly; because I have my screen lit at full capacity and I have many apps that are consistently on."
"With this case I do not charge it at all during the day."
"This was the perfect Christmas gift for my niece who had just gotten a phone for her birthday."
"Plus it's sleek and adds very little size and weight, especially considering that it has a battery inside."
"I'm a full time student and have long days on campus and frequently find my phone battery wears down."
"Case is very sleek and good hard plastic!"
Best Internal Cell Phone Replacement Batteries
![YONTEX Battery Model iP6 - Brand New 0 Cycle - with Replacement Repair Tool Kits , Adhesive Strip , Instruction and Screen Protector [24-Month Warranty]](https://images-na.ssl-images-amazon.com/images/I/71ho5TbA4AL._SS600_.jpg)
We are a professional manufacturer who specialize in Electronic accessories such as battery, data cable, cell phone case and screen protector. In order to replace the battery more easily, we strongly recommend you to watch more relevant video about replacing the battery on YouTube before you replaced. 2.Before you begin, discharge your battery below 20%. 3.At the first beginning,the battery will drain quickly,this issue is caused due to the li-ion of a new battery is unstable, it will become normal after long-term use.To use the battery longer, please use up all the energy of battery until your phone shuts down automatically, then charge it for up to 10 hours, repeat this 3-5 times, thus the battery can be reached the optimum effect of using. It means that this is a premium quality battery,it is brand new,not refurbished,it will provide longer battery life than those non 0 cycle battery.
Reviews
Find Best Price at Amazon"The instructions also don't mention to remove the display, it is very simple if you have done any iPhone repairs before, 5 or 6 screws, remove the connector cover and use a spudger tool to remove the connections."
"A few tips: -Instead of hunching over your table, stack some large books on your table or even use a cardboard box so you can work on it at eye level. -Put the screws and parts in a bowl as you remove them so they don't run away, (guess that's why this kit gives you extra screws.). All the screws are magnetic except the very top-right one, so put all the magnetic screws back in first so you can find that last non-magnetic one. -The top plate pushes against the ribbons so you'll need to slip a finger in between the two halves to hold it in place to screw it back down. Put one of the magnetic screws on the tip of the screwdriver beforehand, ready to go."
"In case you haven't already read the reports, here's why it matters for anyone shopping for a new iPhone battery: - Your iPhone's battery has likely degraded after 2+ years of use. - The battery itself is performing well! For just a battery replacement, you don't actually *need* to do this extra step, but it may make things easier if the battery adhesive is hard to remove later on. - BEFORE removing adhesive strips, use a hairdryer to warm up the back of the case near the battery to soften the adhesive, making removal easier. - IF the battery adhesive snaps and you need to pry it out, use a thick credit card and try to keep the battery as flat as possible, and be careful not to damage the volume control ribbon near the lower volume button, running around the back of the case. - After install, make sure to do a hard-reset of your phone, and follow the battery-conditioning instructions: Let the phone discharge until it shuts off by itself, then charge uninterrupted up to 100% (Instructions say up to 10 hours) and repeat this 0%-to-100%-to-0% procedure a 4-5 times so all your battery cells are optimally primed. --. Personal experience with new battery: --. - I formerly had a "Service Battery" notice on my settings screen and that's gone now."
"I ordered this battery to replace her ~2 year old battery. When you're installing this battery, be sure the ribbon cable coming out of the battery is folded neatly to the side of the battery, so it doesn't keep the phone from seating down properly."