... , 2800mAh,2900mAh and 3000mAh---use Samsung 18650 lithium ion battery cells3100mAh, 34oomAh use Panasonic 18650 lithium ion battery cells.2.Norminal Voltage:3.6V-3.7V3 ... in useLight weight, small size and high performanceSmall internal resistanceHigh energy density, low self-dischargePollution free, long cycle lifeNo memory effectExisting ...