The GENIUSPRO25 is a professional-grade 25-amp smart charger engineered for comprehensive battery care of 6V, 12V, and 24V automotive, marine, and deep-cycle batteries. Functioning as a charger, maintainer, power supply, and desulfator with temperature compensation, its standout feature is its enhanced recovery capability. The new start-voltage sensor allows charging of batteries depleted to just 1 volt, while the manual force mode provides a solution for reviving even completely dead, zero-volt batteries.