Features and Benefits:

• A 6V and 12V battery charger and maintainer.
• Charges lead-acid and lithium-ion batteries up to 40 amp-hours.
• An improved start-voltage sensor now detects dead batteries as low as 1-volt. And an all-new force mode allows manual charging for extreme dead batteries - all the way down to zero volts.
• Built-in battery desulfator to recover worn-out batteries.
• Smart indicators quickly detect when the battery charger is connected in reverse polarity, connected to an incompatible battery, or if the battery is failing.

The Genius2 is a portable automatic battery charger and maintainer for both 6V and 12V lead-acid and 12V lithium-ion batteries. Designed for charging a Car, 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.