Schumacher SP2 SP2-CA 1A 6V/12V Automatic Battery Charger/Maintainer 1A 6V/12V fully automatic battery charger/maintainer Charges small batteries and keeps stored lead-acid batteries charged Microprocessor controlled with multi-stage charging for added precision, safety, and battery life Float-mode monitoring automatically maintains optimum battery charge Auto-voltage detection for 6 or 12 Volt batteries