The Jump Starter SOS Booster® SOS 12/24/28V-3200CA powered by CETEOR has an intensive 12 V, 24 V or 28 V vehicles. It is used when starts are difficult. It powers up fully flat batteries. It can be used successively several times of the day. It is a jump start of vehicles' fleets and can be used even in difficult situations such as frost or extreme heat.