A heavy-duty and powerful battery charger and jump starter is essential equipment for any professional mechanic. Since 1947, the pros have trusted Schumacher Electric to deliver the highest quality automotive tools and accessories. The Schumacher DSR ProSeries 125-Amp 6-Volt/12-Volt Jump Starter and Battery Charger (DSR145) is part of the DSR ProSeries line of products, designed and engineered exclusively for professionals. The DSR145 features a 125 amp engine start, a 15-amp-40-amp boost mode, a 15-amp-40-amp service mode, and 6-amp charge/maintain mode. It also incorporates a battery and alternator tester that will diagnose a range of battery and charging system issues. Other features include push-to-start charging, recovery mode, a range of safety features, a digital display, and much more. Solid performance, advanced design, and long-lasting durability make this charger a great choice for any professional.