The 2000 watt 12 volt low frequency AIMS Power inverter charger transforms DC (direct current) power, stored by batteries, into AC (alternating current) electricity that can be used to run most all tools and appliances. This inverter also has a built in AC-to-DC battery converter charger and transfer switch, which allows users to recharge their battery bank from an AC source such as a fuel-powered generator, shore power or a regular outlet at home. This inverter also features a battery-type selector, which helps user regulate the voltage going into the battery bank. This capability can be a big money-saver since treating the battery bank properly will maximize its lifespan.