Battery status/charge system monitor for 12V lead-acid & 12.8V lithium-ion with AUTO/DIN plug. Fully enclosed electronic circuitry with 4 LEDs. Cable rating: 18AWG (0.82mm2) SPT-2W. Weatherproof sealing cap. SAE charge connector. 10A fuse in connector. 12 mm DIN plug. 21 mm AUTO. Rubber shroud.