Professionals looking for quality automotive tools that are built to last trust the Schumacher DSR ProSeries line of battery chargers and jump starters. Durable construction and powerful dual lithium batteries mean the Schumacher DSR ProSeries Automotive 12-Volt 4000 Peak Amp Lithium Portable Jump Starter (DSR164) can be counted on to get the job done. With 4000 peak amps， the DSR164 has enough power to jump start 10-cylinder gas or diesel engines in the shop or on the road. The DSR164 boasts the most advanced technology. With Schumacher’s innovative Pre-Heating mode， you can effectively jump start a vehicle in extreme cold (-13°F/-25°C). Pre-Boost technology will safely add a pre-charge to even deeply discharged batteries. Because it is designed for professionals， the DSR164 is built to withstand the toughest use and includes features such as heavy-duty 4-gauge， 30-inch copper cables that will stay flexible in cold temperatures. It includes other features to make any job easier， such as a three-mode work light and a 2.4A USB port that lets the DSR164 function as a portable power bank when needed.

4000 peak amps

Internal dual lithium ion batteries will jump start a vehicle up to 50 times on a single charge

Will jump start up to 10.0L gas and 8.0L diesel engines

Pre-Boost technology adds pre-charge to discharged batteries

Pre-Heating technology warms the battery before jump starting

Built-in， three-mode work light

Features a 2.4A USB port (output) and a 15V 2A port (input)

2.4A USB port charges mobile devices two times faster than a standard USB charger

Reverse polarity protection

Includes 4-gauge， 30-inch copper cables

Color-coded copper clamps

IP65 weather resistant design

6X faster recharge time， 3X lighter weight， and 6X longer shelf life than traditional AGM jump starters

In the Box: Schumacher ProSeries DSR164 Lithium Jump Starter， AC wall charger， 12V DC car charger， and user manual