Description The G4 is a 4-bank automatic battery charger and maintainer for both 6V and 12V lead-acid and lithium-ion batteries. It’s capable of charging up to four different batteries at the same time, and perfect for charging a Motorcycle, ATV, Snowmobile, Personal Watercraft, Lawn Mower and much more. It also can be used as a battery maintainer to keep a Car, Boat, RV, and deep-cycle batteries fully charged. And it monitors battery activity for safe and efficient charging without any overcharge and complete with a built-in battery desulfator to rejuvenate underperforming batteries.Features: A 6V and 12V 4-bank battery charger and maintainer. Charges lead-acid and lithium-ion batteries up to 40 amp-hours. Recovers deeply discharged batteries down to 2-volts. Spark-proof technology and reverse polarity protection. Built-in battery desulfator to recover worn-out