Introducing the Schumacher DSR ProSeries 250-Amp 12-Volt Jump Starter and Battery Charger (DSR121) – the ultimate tool for auto service professionals and DIY enthusiasts alike. Experience outstanding performance and innovative design with this durable and reliable battery charger and engine starter. With its energy-efficient and fully automatic operation， the DSR121 takes the hassle out of charging and maintaining vehicle batteries. Equipped with a microprocessor， this unit offers multi-stage charging， float mode monitoring， and reverse hook-up protection to ensure safe and convenient operation. Among its impressive features， the DSR121 provides a powerful 250-amp engine start for a quick jump start， and a 15-amp fast charging feature for speedy recharging. It also offers a boost mode with a 25-amp/50-amp charging rate， as well as a standard charge/maintain rate of 4 amps. Designed to deliver reliable and efficient charging and engine starting performance， the Schumacher DSR121 is the go-to choice for professional mechanics. Get yours today and experience the power and performance you can trust.

250-amp engine start， 25-amp/ 50-amp boost， 15-amp fast charge， and 4-amp maintain rates

Compatible with 12-volt standard， AGM， gel， and deep-cycle batteries

Powerful enough for SUVs， trucks， and large engines

25-amp/50-amp boost mode quickly brings deeply discharged battery back to life

Automatically adjusts the amperage rate to charge and maintain

Multi-stage charging for added precision， safety， and battery life

Float mode monitoring automatically maintains optimum battery charge

Reverse hook-up protection protects the battery and unit from damage if the connection is reversed

Digital display， LED indicators， and push-button controls

Start/Stop interface

Extra-long output cables for 17 feet of total reach

Retractable handle， compact wheels， and metal casing

In the Box: Schumacher DSR ProSeries DSR121 250A 12V Wheeled Jump Starter and Battery Charger， (4) cable clamp cleats， (4) screws， and user manual