Introducing the all-new Noco Genius 2X4, making it one of the most powerful, highest-performing, energy-efficient, and compact charger yet. The Noco Genius 2X4 is a 6-volt and 12-volt four-bank battery charger, battery maintainer, trickle charger, and battery desulfator. It's rated at 8-amps (2-amps per bank) for all types of lead-acid and lithium-ion batteries, including flooded, gel, and AGM, as well as marine and deep-cycle batteries.