Alpenheat Battery 

Model BP21

• Rechargeable high-performance Li-Ion battery 7.4V / 2200mAh /16,28Wh
• Battery: small, light (97g) and compact (70 x 45 x 19mm)

Battery (without recharger) for heated gloves: AG21

The price is for one battery as shown in the picture.

BP21, BP11, BP6 and BP7 are not compatible with one another. Only use the BP specified for your gloves.