The DEWALT DXAEC801B professional battery charger and maintainer has all the features that you need, whether you are a pro or a beginner. Just connect the powder coated heavy duty metal battery charger clamps to the battery terminal and press charge. The reverse polarity alarm will alert you when there is an improper connection. Once connected, the bench battery charger automatically does the rest for optimum performance. Fully automatic, high frequency charging delivers 3 stage charging, automatically switching from fast charge, to top-off, to trickle charge. This battery charger is ideal for motorhomes, boats, jet skis, lawn tractors, ATVs, snowmobiles, and vehicles that sit idle for months at a time. Charge and maintain any AGM, GEL, or WET automotive or marine 12V batteries. It's equipped with a digital LCD screen that displays charging status and battery status with easy to understand icons. It also features an alternator check function, battery recondition function, a 120 Volt AC power outlet, and 3.1 Amp USB outlet. The DEWALT DXAEC801B professional battery charger and maintainer also features an 80 amp engine start with 30 amp continuous output, which helps start your vehicle in about 60 seconds for when you need to get back on the road quickly; includes a limited 1 year manufacturer warranty.