There are a few different 3rd party battery solutions available for the 3DS now. I'd like to compare the specifications of each to determine which are the better options. Some of them replace the stock 1300mAh battery of the 3DS and others work along side it. Nyko Power Pak+ ???mAh. The website doesn't seem to list the capacity of the battery as a number. It simply says it has double the capacity of the stock battery. I believe this one replaces the stock battery, so that would be 2x1300mAh Total of 2600mAh. http://www.nyko.com/products/product-detai...me=Power+Pak%2B Universal Gadget Wrist Charger 1500mAh Works along side the 3DS battery, so that's 1300mAh original plus 1500mAh from this device. Total of 2800mAh. http://www.thinkgeek.com/computing/usb-gadgets/ceca/ Hyperkin Battery Pack 1800mAh according to the packaging, but the actual battery itself seems to have 1300mAh printed on it. Lets give them the benefit of the doubt and work with the higher figure. This one looks like it replaces the stock battery, so we just get whatever its capacity is. Total of 1800mAh if the packaging is to be believed. http://www.amazon.com/3DS-Rechargeable-Bat...o/dp/B004TPVHQ8 Anyone know of any other 3rd party battery solutions available?