Automatic Battery Float Charger 12 VDC Prevents battery self-discharge while maintaining life of rechargeable 12 volt lead-acid batteriesMaintain batteries rated 5-125 AMP-hoursProvides 13.5 vdc maximum output at 500 mAOutput display: red & green LEDsAvoid jumpstarts on seldom-used vehicles by keeping the battery fully chargerAutomatic safety shutoffCopper plated battery clamps90″ cord easily reaches outlets and batteriesMaintain the charge of your 12-volt battery without overcharging.Instruction manual includedUL listedIllinois Industrial Tool16110