Mini Projector is smaller and lighter than the traditional type.
The battery should be flexible in shape and smaller in size, but capacity of battery will be higher than before.

1)PCM:
This battery pack applied special designed protection circuit: 
Over charge, Over discharge, Short circuit and over current protection.Prevent battery from fire and explosion.
2)Protection IC:
The protection IC with real time detection function: over charge ,such as over discharge ,over current and short circuit protection. It ensured battery security and stability.
3) NTC 
It will detect the temperature of battery, and active the protection system.
4)Cell model:DF-666168  3500mAh/ 3.7V
Battery Schematic

 

Picture of cell 6.6*61*68mm   3.7V  3500mAh             Discharge Rate Characteristics