The ActionHeat 7V batteries are super slim, sleek, and powerful. They are designed specifically for ActionHeat gloves and accessories. They fit perfectly into the battery pocket.NOTE: These are 7-Volt batteries and will only work with ActionHeat 7-Volt Products.Compatible With: ActionHeat 7V Everyday Heated Gloves (Men&';s & Women&';s) ActionHeat 7V Rugged Leather Heated Work Gloves Specifications: Lithium-Polymer Core Capacity: 2200maH/15Wh Charging Time: 3-4+ hours Dimensions: 7.0cm x 4.2 cm x 1.45 cm Output Power: 15W (MAX) Input: DC 8.4V_1200mA Battery Care: It is important to maintain at least 25% of your battery power when not in use. Failure to do so may result in performance problems and reduced battery life Disconnect the battery packs from the gloves when not in use Do not wash batteries Battery Set Includes: (2)7.4V 2200maH Rechargeable Batteries (1) Charger Kit (NOTE - Only use this charger for the batteries)