The Battery Tender Battery Charger 081-0157 is a compact and versatile charger designed to keep your batteries fully charged and maintained. It features a 4-step charging process that automatically switches from fast charging to float mode, ensuring a safe and efficient charge for your battery. The charger is compatible with all types of 12-volt lead-acid batteries, including flooded, sealed, and gel cell batteries. It also comes with a quick connect harness for easy and convenient use. With its advanced technology and user-friendly design, the Battery Tender Battery Charger 081-0157 is the perfect solution for keeping your batteries in top condition.