highest energy battery Longer service life for more than 350cycles More safe with PTC,No memory environmentally friendly Different voltage.different capacity.different weight.different discharge properties of lithium batteries can be customizedLithium ion battery monomer: Rated Capacity 2000mAh (0.5CA Discharge)Rated Voltage3.7VInternal Resistance ≤200mΩ with PCMCut-off Discharge Voltage Charge ...