Experienced mechanics know that a powerful wheel charger is an essential ingredient for any well-equipped professional garage. And while some mechanics prefer fully automatic chargers， others want a charger that gives them complete control over each process. For these mechanics， the answer is a Schumacher DSR ProSeries manual wheel charger. The Schumacher DSR ProSeries Automotive 6-Volt/12-Volt 225-Amp Manual Wheel Battery Charger and Jump Starter (DSR139) features a 135-minute timer that gives you control over every facet of charging with multiple charging options. The unit features a 225 cranking amp (12-volt) engine start， which is enough power for cars， SUVs， trucks， boats， and other large engines. The DSR139 also includes three boost modes—50-amp (12-volt)， 25-amp (12-volt)， and 25-amp (6-volt)—for quickly adding charge to a deeply discharged battery. It also includes a 10-amp 12-volt charge mode for basic battery charging.

For use on all 6-volt and 12-volt standard， AGM， gel， and deep-cycle batteries

Ideal for cars， SUVs， trucks， boats， and other large engines

225-amp (12-volt) jump start is powerful enough to jump large engines

Boost modes—50-amp (12-volt)， 25-amp (12-volt)， and 25-amp (6-volt)—quickly bring discharged batteries back to life

10-amp (12-volt) charge mode is ideal for your basic charging needs

135-minute timer keeps you in control of the charging process

Easy-to-read analog meter lets you easily monitor charging levels

6-foot power cord and 6-foot front-mounted output cables give you a 12-foot total reach

6-gauge output cables stay flexible even in cold conditions

Heavy-duty， color-coded clamps provide a solid connection for both top- and side-mounted battery posts

Durable metal case， retractable handle， and compact wheels

Solid state circuitry with silicon diodes to optimize performance

In the box: Schumacher DSR ProSeries DSR139 Wheel Battery Charger and Jump Starter， (4) ¼-20 thread-cutting screws， (2) wheels， axel， (2) nylon spacers， (2) axel end caps， right foot， left foot， and user manual