1. Battery Item specifics ：
Type: Li-Ion 18650
Nominal Capacity: 3400mah（3300-3400mah）
Nominal Voltage: 3.7V
Rechargeable Battery: Yes
Rechargeable Times: Up to 500 times
internal resistance: ≤40mΩ
Limited Charge Voltage: 4.2v
Working Voltage: 2.75-4.2V
Size: 65.5mm x 18.5mm (Diameter)
Place of Origin: JAPAN
Safe and environmental friendly.
100% LiitoKala Brand New and High quality.
18650 rechargeable li-ion lithium battery.
Suitable for laser pointer, flashlight torch and other electronics products.100%