Battery charger, battery tender power tender plus high efficiency. Input: 120 Volts AC, 60Hz. Output: 12 Volts DC at 5A. For all lead-acid, flooded or sealed maintenance free batteries. Complete 4-step charging program (initialization, bulk charge, absorption mode, float mode). Automatically switches to float / maintenance voltage after fully charging the battery. Spark proof and reverse polarity protected. Includes: (Qty.) (1) Ring Terminal Harness, (1) Alligator Clip Harness.