The ActionHeat 7V batteries are compact and powerful.NOTE: These are 7-Volt batteries and will only work with ActionHeat 7-Volt Products.Compatible With:ActionHeat 7V Heated Sleeping Bag PadActionHeat 7V Battery Heated Throw BlanketSpecifications:Lithium-Polymer CoreCapacity: 5000maH/37WhCharging Time: 4-6+ hoursDimensions: 8.3cm x 6.1cm x 2cmOutput: 7.4V / 2A (max)Input: DC 8.4V / 2A (max)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 lifeDisconnect the battery packs from the gloves when not in useDo not wash batteriesBattery Set Includes:(1)7.4V 5000maH Rechargeable Battery(1) Charger Kit (NOTE - Only use this charger for the batteries)