7.4V 5400mAh Li-Ion Battery for use with the Multi-Voltage Base Layer, Hand Warmer, Socks, Gloves and/or Glove Liners. This does not have a Controller in it and it is assumed that you already have one. This can be used with our heated Liner as well.
This is only the battery. If you do not have the charger, then you need to order that also!