Li-ion rechargeable battery.
No memory effect.
Short circuit and over-current protection.
Can be recharged over 500 times.
Voltage of full charge and empty condition is 4.2V & 2.75V respectively.
Environment friendly: no toxic waste.
Weight: 96.30 g
Size: 22.214.171.124 cm
* 2 × UltraFire LC 18650 3.7V 2400mAh Rechargeable Battery