Product: Rechargeable lithium battery
Brand: Panasonic
Model: NCR18650B (Panasonic 3100mAh for the NCR18650A)
Life: 1000 times
Voltage: standard 3.6-3.7V, filled with 4.35V, put 2.75V
Resistance: 40 milliohms or less
Capacity: 3400mah
Size: diameter 18mm, length 65mm