Lithium Ion (Li-Ion) Battery Pack - 3.7V 4400mAh

This battery pack is made of 2 balanced 2200mAh cells for a total of 4400mA capacity. The cells are connected in parallel and spot-welded to a protection circuit that provides over-voltage, under-voltage and over-current protection.

The protection circuit prevents the battery voltage from becoming too high (overcharging) or too low (used too long), meaning the battery will stop working when the voltage reaches 3.0V. However, note that even if protection is present, only use a Li-Ion/LiPo 'constant-voltage/constant-current' charger and recharge them at 2.2A or less. Like most lithium-ion packs, the batteries do not have thermistors built in.

Additional safety warning: do not use a NiMH/NiCad/lead charger! Use only a suitable Li-Ion/LiPo charger for 3.7/4.2V cells and always stay nearby while charging.

Specifications

• 2x 2200mAh Lithium Ion cells
• Dimensions: 69mm x 37mm x 18mm
• Weight: 95g
• Max. charge current: 2A
• Max. continuous decharge: 4.4A