The BLACK+DECKER BC15BD battery charger and maintainer will get you back on the road in minutes when your vehicle won't start or if your battery needs maintenance. Just connect the battery charger clamps to the battery terminal and press charge. 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 bench 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 12 V battery. 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 to evaluate the battery voltage under load to indicate if the alternator is maintaining battery level. This battery charger eliminates the need to manually input settings like battery type and size, and charges up to 40 percent faster than other conventional chargers. The BLACK+DECKER BC15BD bench battery charger and maintainer also features a 40 amp engine start, which helps start your vehicle in about 90 seconds for when you need to get back on the road quickly. The built-in cord, cable wrap, and clamp storage make this battery charger easy to use and store. California Energy Commission (CEC) compliant and ETL Certified for performance and safety..