The Mroinge Fully Automatic 7-Stages Smart Car Battery Charger is lightweight and compact and simple to use.It has the digital screen and it shows as its charging status, battery voltage, battery capacity, fault code.I used it to charge my son’s hoverboard which has a Lead Acid battery sitting in patio for 10 month. It was dead at the beginning of season. This charger brought it back in 1 night worth of charging. I can’t believe it! Highly recommanded.