DSR118 2/15/125A 12V ProSeries Battery Charger/Engine Starter Solid performance, design and long-lasting durability make the DSR118 a great choice for professionals. It’s energy efficient and fully automatic. This unit offers. 125A Engine Start, 15<>40A Boost/Service and 6<>2A Charge/Maintain rates.. 125A Engine Start – powerful enough for SUVs, trucks and large engines. Boost mode – quickly brings deeply discharged battery back to life. Service mode – maintains voltage at 13.6V to prevent discharge. Battery tester. Scrolling digital display. Heavy-duty construction. 125A clamps with copper cable. Built-in cord management. Auto voltage detection. Reverse hook-up protection DSR118