Introducing the all-new GENIUS10, a powerful, high-performing, energy-efficient, and compact charger. The Genius 10 is a battery charger, battery maintainer, and battery desulfator rated at 10-amp. Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries. An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.