850mAh Rechargeable Battery with Color Box Packing for NDS

3.7V, 850mAH Rechargeable battery pack for NDS Console

Please charge the battery for 10 hours when using for the first time.

Voltage: 3.7V

Capacity: 850mAh

The battery can be charged or discharged several hundred times,

It Should be replaced by new battery when it can not work as usual.