3.7 V rechargeable Lithium-ion 18650 battery
Provides long lasting energy with very low self-discharge
Integrated protection PCB protects against overload, short circuit and deep discharge
Suitable for use in e.g. LED torches, laser pens, etc.
Note: because of the protection PCB the battery is approx. 3 mm longer than most unprotected 18650 Li-Ion batteries.