I bought this charger/maintainer to use on an ATV that gets only sporadic use. It seems to work fine, and there haven't been any problems with dead batteries since we've started to use it. The indicator lights are clear and give a good indication of what's going on, and the price was certainly right. Note that the cigarette light plug will only work if the lighter is "always on" and connected to the battery; if the lighter circuit is turned off when the key isn't in the on position, then you'll have to hard-wire the charger to the battery with the included cables or else use the alligator clamps. Recommended.