This versatile battery maintainer and charger is ideal for a wide range of vehicles, from cars and small trucks to motorcycles, ATVs, boats, and more. It features smart detection that automatically recognizes 6V or 12V batteries, alerting users to potential issues like low voltage, sulfation, or capacity loss, with prompts for repair if needed. The device's fully automatic, 8-stage high-frequency charging with a microprocessor ensures efficient, rapid charging. Constructed from durable, industrial-grade materials, it includes multiple safety protections, including over-current, overcharge, overheat, reverse connection, short circuit, and full-charge stop. Compatible with 6V and 12V lead-acid batteries (WET, WF, EFB, GEL, AGM), it provides reliable performance across battery types.