This product is no longer for sale, it has been replaced with Lithium Ion polymer Batteries pack - 3A.This is a light weight, high energy density Lithium Ion polymer battery. It outputs a nominal 3.7v at 3300mAh, comes terminated with a standard 2-pin JST connector- 2mm spacing between pins.FeaturesExcellent long-term self-discharge rates Dimensions: 76.9X47.8X7.7mmWeight: 60gPlease do not attempt to charge these with anything but a specialized Lithium Polymer charger.Battery includes built-in protection against over voltage, over current, and minimum voltage.