BC3602 + Alligator Clamps: VMAX BC3602 36V 2 Amp 4-Stage Smart Battery Charger and Maintainer

Specifications: Input Voltage: 110VAC Input Current: 1.6A Nominal Voltage: 36V Bulk Charge Voltage: 44.1V Bulk Charge Current: 2A Connector: Insulated Alligator Clamps Battery Type: SLA, GEL, AGM Battery Capacity: 9-40Ah Enclosure: IP54 Size: 6.7 L x 2.8" W x 2" H Weight: 14.5 oz. How to use: 1. Connect the AC cord to AC outlet. The "power" LED will light on solid. 2. Connect positive charger clip (red) to positive battery terminal, the black clip to negative. The "25%~100%" LEDs will light in a sequence. If the batteries polarity is reversed or output is shorted, all LEDs will flash simultaneously, DISCONNECT & CHECK. 3. Depending on the charged capacity, 25%~100% LEDs will light up solid. When all are ON, the battery is fully charged. You can disconnect the battery to use OR keep it connected to charge in float mode. If battery stays at Stage 2 after 24 hours of charging, then the battery is defective.