Bolt Energy 51V 60AH Heated Lithium Battery51. 2V 60Ah Battery Heated Battery Specifications: Heated batteries warm themselves as they start to charge, and once it hits around 34 degrees, they start 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