Typical Recharge Time: 8-12 hours This waterproof, fully-automatic charger is ideal for both short term and seasonal storage, even if moisture sneaks into your storage area. The three-step charging system constantly monitors battery voltage to bring the battery up to full charge and switches to float mode to maintain the charge over extended periods of time. The vibration- and shock-resistant Battery Tender is reverse polarity protected and spark proof, even when the leads touch. The Tender features a front panel LED that indicates the battery's state of charge. Maximum charge rate of 800mA. Kit includes a quick-disconnect 7.5 Amp fused Battery Charging Harness with ring terminals that can attach to the battery screw terminals for easy connection, and a 7.5 Amp fused alligator clip charging harness. 3-year manufacturer's warranty. For 12-volt batteries. See matrix for specific voltage allowance.