This item is very new in the market. It is just a rechargeable batteries size AA, you can connect the batteries into USB port when it is out of power. Very ealy for your operation. We can offer capacity of 1450mAh, 800mAh, 500mAh, 300mAh with a nice blister card package of 2pcs/card.
Please read the specification as below: 1) Rechargeable AA size batteries 2) Can be recharged simply by plugging into a USB port. 3) Widely used as common AA battery 4) Can be charged by normal charger 5) Saves money and battery waste 6) Packing: 2pcs/blister card 7) Norminal voltage: 1.2V 8) Typical capacity: 1450mAh 9) Charge time: 5 -6 hours(by USB port)