Part of the RUGGED BY SCHUMACHE®  line of jump starters, the SL1649 is built to withstand a lot of abuse. It’s a compact jump starter to rely on. A high-performance four-cell lithium battery provides enough power to jump start a vehicle and charge a range of devices. The jump start function incorporates advanced Pre-Boost technology to safely add a pre-charge to deeply discharged batteries, as well as a Pre-Heating feature to warm batteries in cold conditions, making it possible to start a vehicle even in extremely cold temperatures. The SL1648 can also be used as an emergency power source with a 2.4A USB port or an emergency three-mode light source. 

Additional features:

• Internal lithium ion battery will jump start a vehicle 30 times on a single charge
• Compatible with 6.0L gas and 3.0L diesel engines
• 2.4A USB charges mobile devices 2X faster than a standard USB charger
• Three-mode LED light – steady, SOS, and strobe
• Built-in, 24-inch jumper cable with heavy-duty clamps
• Reverse polarity, short circuit, temperature, battery low voltage, overcurrent, overload, overvoltage, and overcharge protection
• Recharges fully in 2 hours from 12V DC car charger or 4-5 hours from USB charging cable
• Includes an override feature for starting a battery with low voltage
• One-year warranty

Contents include: The RUGGED BY SCHUMACHER® SL1648 Lithium Portable Power Pack and 1250A Jump Starter, 12V DC car charger, USB charging cable, carry bag, and user manual.