An improved version of the famous Battery Tender®. Lucky for you (and your battery) the cost is the same. The enhancements to the original design are in the circuitry that ensures better absorption and a built-in 72 hour safety timer will protect a marginal battery from being overcharged. The display improvements tell the user that AC power is on, when it is charging, that the battery is 80% charged, that full charge has been attained, and the unit is in ‘float’ charge mode. A good, useful product that just got better. Electrifying. 12V, 1.25 A.