This NOCO battery charger is a high performing battery charger and maintainer that will work on both a 6 or a 12 volt system. This charger is designed for acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries. Enjoy a simple set up and easy process by simply plugging in, connecting to your battery and selecting a charge mode to activate a fully automatic, worry-free charge. This system features an integrated thermal sensor which detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates. This powerful charger allows you to charge dead batteries as low as 1-volt. Or use the all-new Force Mode that allows you to take control and manually begin charging dead batteries down to zero volts. This charger also acts as a desulfator, detecting sulfation and acid stratification and restoring lost performance for stronger engine starts as well as extended battery life.