Descriptions:

Voltage: 6V
Chemistry: Ni-MH
Size: 71x51x15mm

Weight:About 107.6g

Number of Cells: 5x AA 1.2v(6v)

Capacity: 4200mAh.
Rechargeable times: up to 1000 times

Features:
Brand new and high quality.
Rechargeable up to hundreds of thousands of times.
Environmentally friendly: no toxic waste.
Main purposes: for RC boat, RC car, tank toys, Lighting, model car, etc.

Warning:

Don't put it near high temperatures.

Don't throw it into a fire.

Don't throw it into the water.