1.5A 6/12V Doe Battery Maintainer. Fully Automatic 6V/12V 3 Amp Battery Charger/Maintainer Keeps Stored Lead-Acid Batteries Charged. Charges And Maintains Small Batteries. Scrolling Digital Messaging - The Easy To Ready Animated Display Provides Step-By-Step Instructions To Properly Charge Your Battery. Hook Attachment - Hand Outside The Work Area For Safety And Convenience. Microprocessor Controlled Multi-Stage Charging For Added Precision Safety And Convenience. Features Auto-Voltage Detection For Added Precision Safety And Battery Life.