Keeppower RCR123A Power Battery (16340) with a capacity of 800 mAh is based on Li-Ion technology. The battery has 15% more capacity compared to standard competitors while maintaining the same size. It can serve very well as a charging source for powerful flashlights. Due to the lithium-ion nature of the cell, you do not have to worry about memory effect and self-discharge jumps.
The battery has two protection spheres. The first is in the form of an electrical circuit that is located at the negative pole of the battery. This nifty circuit prevents the battery from overcharging (risking explosion and damage to the device), and also prevents it from being completely discharged (the cell would then no longer be able to be charged). The circuit also prevents excessive discharge and short circuit. The second sphere prevents overheating and contains a special anti-blast valve.
Before buying, check what type of battery your device requires!