Bolt Energy 74V 105AH Heated Lithium Battery73. 6V 105Ah Battery Heated Battery Specifications: Heated batteries warm themselves as they start to charge, and once they hit around 34 degrees, it starts charging normally The heating system only runs when the battery is under the charging temperature and will automatically shut off once the proper temperature is reached The battery can charge in unheated places such as garages, barns and even outdoors The heating system only activates while the