Best Nintendo 3DS Batteries

OFFICIAL OEM Nintendo 3DS CTR-003 Rechargeable Battery %100 Original in package. OFFICIAL OEM Nintendo 3DS CTR-003 Rechargeable Battery.
Reviews
Find Best Price at Amazon"After years of HEAVY use, my daughter's 3DS needed a new battery."
"My 3ds battery was swollen and too dangerous to use."
"Was about to throw the game away when I read it might just need a new battery."
"Fits well, definitely previously used, had some of what I assume are scoring marks from when is was pulled out of the last device."
"This saved my original 3DS since my 3 year old battery had puffed up quite a bit."
"It works very good, I would buy this again."
"Official Nintendo battery, but came in a small zip lock bag."
"The battery will no longer charge."

The Power Pak+ is the ideal solution for powering your 3DS allowing you to play longer with more comfort. Double the capacity and play time of the original 3DS battery Soft Feel Surface and de-bossed finger rest allow for improved control and comfortable play Includes mini screwdriver for easy installation.
Reviews
Find Best Price at Amazon"While I haven't done any real time comparison tests, I've had my Nkyo-powered 3DS off the charger for 9 hours now (I don't use the dock), and it has only consumed one bar of the battery meter. On the positive side, the bottom of the battery is a rubbery non-skid material which does make it slightly easier to grip, and sits on a table-top without fear of sliding away. I did not notice this, and when I tried to sync White 2 to the Global Link, it detected a time change and placed a hard-wait of 24 hours on me."
"In playing with this for a couple of hours now, I've noticed that the slight additional thickness means my hands aren't getting sore from holding the skinny lower portion of the system."
"The product works as intended, feels good, and not heavy, and was a good replacement to my old, unusable 3ds battery, BUT when I opened the packaging and was installing it, I noticed it was missing the right most screw, and had clearly been broken...."
"The pack itself is a solid piece that fits onto the back of the 3DS once the existing 3DS's back cover and battery are removed."
"So here are the cons and pros: Pros: Great feel. Great battery life. Size makes it more comfortable to hold. Easy install just unscrew take off battery replace with net battery and screw in place. Cons: Turns off 3DS randomly. So that is it."

5000mAh Extended CTR-003 C/CTR-A-AB Battery with Cover for Nintendo 3DS N3DS CTR-001 MIN-CTR-001 Gaming Console. Replacement for: Nintendo CTR-003, CTR003 & C/CTR-A-AB Battery.
Reviews
Find Best Price at Amazon"The Cameron Sino 5000 mAh battery for the 3DS is by far one of the best batteries for the Nintendo 3DS. Pros: - Very long battery life (at least 10 hours of gameplay). - Very cheap compared to Mugen battery for 3DS. - Makes 3DS to feel comfortable. Cons: - Makes 3DS bulkier than the Nyko Powerpak+. - Makes 3DS heavy. - Screwdriver not included. Overall, I highly recommended buying this battery over anything else for the price and 4x the battery life."
"The 3DS often complains about the battery, with blinking orange charging lights halfway through--you need to unplug and replug it at least once, I find. You can keep it on standby for a week or so before the warning light comes on, and that's with the wireless turned on so that you can get streetpasses. You can literally play games all day and it'll be okay, although on the small 3DS screen that may be tiring for some people."
"It is a little tricky to install the new back plate, as the screws need to fit into narrow grooves, and I did end up dropping the screws a couple of times. I had also installed the back piece incorrectly at first, which led me to believe that it did not fit correctly."
Best Nintendo 3DS Chargers

This travel charger is lightweight. Intelligent IC chip inside recognizes a fully charged battery and automatically switches to a saver mode to prevent overcharging and short circuit.
Reviews
Find Best Price at Amazon"I have Dsi Xl Blue 2012 model."
"Needed a new charger after my mother's rabbit ate mine, this one does the job."
"it charge's the system so it worked fine for what i needed it for i ended up selling it for 2 times what i payed for it to my neighbor before i moved."
"Works just fine, but the plug doesn't fit flush into the system, you can still see some metal."
"The cord is incredibly short so be prepared to take a break while charging or hunch in an awkward position."
"False advertising!"
"Very disappointed in these, got them as Christmas gifts and both quit working by the 2nd week January."
"Overall it appears to be a matter of luck, but I can't recommend risking such a product if you'll be going on an extended trip."