Get the power you need to jump-start a vehicle or charge a phone with the Schumacher® SL1638 lithium portable power pack and 800 peak amp 12-volt jump starter. This compact and powerful lithium-ion jump starter is perfect for power sports vehicles, motorcycles, and up to six-cylinder cars with its 800 peak amps of power. With its internal lithium battery, the device can jump-start your vehicle up to 15 times on a single charge. The SL1638 is also easily portable and fits in a pocket, glove box, purse, or backpack. It even has a 2.4-amp USB port for fast charging of your mobile devices. The built-in, three-mode LED light is perfect for emergency situations. The SL1638 also incorporates built-in safety features, including a smart cable and clamps that provide spark-free protection against overcurrent, short circuit, overload, and overcharge. Reverse hook-up protection ensures your battery and charger are protected against damage if the clamps are improperly connected.