Numerous LEDs indicate charging in development, battery degree, and once the unit is in float mode. You will find a quick-disconnect harness to switch among the involved ring terminals and alligator clips. Some say the device can warmth up quite a bit when charging for extended amounts of time. Additionally https://hukums.com/products/groz-kitskth1-419ug-hand-socket-14-inch-drive-hex-19-pieces-socket-set