Heavy Engine Batteries are used in Trucks , Buses , JCB , Genset , Dumpers , Compactor , Construction equipments , Cranes , Dozer , Special Vehicle , Telescopic Handler , Hydraulic Shovel , Hydraulic Excavator , Roller , Loader minimum current requirement varies from 80 ampere to 220 amperes, (deponding upon on the systems either 12V or 24 volt).