Heavy truck batteries typically use flooded lead–acid technology and are made up of two monoblocs. They are much larger than car batteries and are driven by different design considerations, such as the need to su. AGM batteryDual battery systemFlooded batteryGel batteryHeavy. Typical starting-lighting-ignition (SLI) batteries found on cars and trucks use the same lead–acid chemistry but have vastly different characteristics, with designs tailored to how th. Car or light truck batteries and heavy truck batteries have different terminal positions and connections (in-line versus U-shape) and also different dimensions.The sizes of mon. Car and heavy truck batteries are designed with different priorities in mind. Both require sufficient power to start the engine and power electrical equipment, but long-haul trucks also need. North American trucks, like cars all over the world, use 12 V as the nominal electrical system voltage. For heavy trucks manufactured outside of North America, the electrical networ.