Most powerful highest-performing energy-efficient and compact chargers. This is a 6-volt and 12-volt battery charger battery maintainer and battery desulfator rated at 1-amp for lead-acid automotive marine and deep-cycle batteries including flooded gel AGM and maintenance-free plus lithium-ion batteries. Features: Detects and charges dead batteries as low as zero volts. Efficiently convert A/C power into safe D/C power for battery charging. Charging modes: 12 Volt - Used for 12 volts wet cell gel ehanced flooded maintence-free & calcium batteries. 12 Volt AGM Mode -  Used for 12 volt AGM batteries. 12 Volt Lithium Mode - Used for 12 volts lithium-ion batteries (including lithium iron phosphate). Only for batteries with Battery Management Systems (BMS). 6 Volt Mode - Used for 6 volts wet cell gel enhanced flooded maintenance-free & calcium batteries. Force Mode - Used to charge batteries below 1 volt. Detects sulfation/acid stratification. Repairs and reverses the damage done to your ba