• 1000 Amps of Lithium Power: The SL1639 delivers 1000 amps of jump starting power strong enough for starting 8.0L and 6.0L diesel engines; Jump start cars, trucks, motorcycles, boats, marine batteries, SUVs, ATVs, and more.
• 2X Faster Smart Phone Charging: The SL1639’s lithium-ion battery power bank provides 29.6 Wh of power and can safely charge your smart devices like phones, s, laptops, wearables, and more via USB power delivery.
• Quick-Charge USB Power Source: The 2.4-amp USB port charges mobile devices two times faster than a standard USB charger; The internal battery recharges three times faster than traditional AGM jump starters; Charge your Apple and Android devices.
• 30X Jump Starts: The Schumacher Electric SL1639’s powerful inte¬rnal lithium ion battery allows users to jump start a vehicle up to 30 times on a single charge.
• Recharges Quickly: Fully recharge the SL1639’s powerful internal lithium battery in 2.5 to 4 hours via the USB charging cable; The internal battery recharges three times faster than traditional AGM jump starter batteries.
• Easy-to-Read Display: The Schumacher Electric SL1639’s digital LCD display shows the battery’s percent of charge and other vital information in a simple easy-to-read format.
• Big Power, Small Package: A compact design makes this a truly portable jump starter and power pack, easily fitting in most vehicle glove boxes or the pocket of your backpack or purse.
• Built-In Area Light: The LED area light has three lighting modes – steady, flashing (SOS), and strobe, making it great for under-the-hood maintenance and emergencies.
• Personal Safety: Don’t find yourself stranded on a dark roadside; Be your own hero with an all-in-one jump starter, power pack, and emergency LED light.
• In the Box: The Schumacher Electric SL1639 Lithium Portable Power Pack and Jump Starter, battery clamps with smart cable, USB charging cable, carrying bag, and user manual.

Schumacher Electric is a brand you can trust to deliver powerful performance and advanced technology. The Schumacher Electric SL1639 Lithium Portable Power Pack and Jump Starter is a lightweight and compact jump starter that easily fits in a center console or glove compartment. Featuring a high-performance four-cell lithium battery, the Schumacher SL1639 delivers 1000 amps of starting power, which will jump start up to 8.0L and 6.0L diesel engines. You can even reliably jump start in tough conditions with Schumacher’s advanced technology. Pre-Boost delivers a breakthrough advantage by safely adding a pre-charge to deeply discharged batteries. Pre-Heating warms batteries in extreme cold, making it possible to start a vehicle even in extremely cold temperatures. In addition to jump starting, the SL1639 acts as a quick-charge USB power source. It features two USB output ports. The 2.4-amp USB port charges two times faster and the 3-amp USB port charges four times faster than a standard USB. The SL1639 also features a built-in area light with three lighting modes – steady, flashing (SOS), and strobe. Other features include a 2-amp USB input for ultra-fast recharging, an extra-large LCD digital display, and safe smart clamps that protect against reverse polarity, short circuit, battery exhausted, high temperature, and reverse charging. En español (ES): Schumacher Electric es una marca en la que puede confiar para obtener un rendimiento potente y tecnología avanzada. El arrancador y banco de energía con batería de litio Schumacher SL1639 de 1000A y 12V es un arrancador ligero y compacto que cabe fácilmente en la consola central o en la guantera. Con una batería de litio de cuatro celdas de alto rendimiento, la unidad Schumacher SL1639 ofrece 1000A de energía de arranque, aptos para arrancar motores de olina de hasta 8.0L y diésel de hasta 6.0L. Incluso puede hacerlos arrancar de manera confiable en condiciones difíciles con la avanzada tecnología de Schumacher. La tecnología de prearranque ofrece una revolucionaria ventaja al agregar una precarga de forma segura a baterías muy degadas. La función de precalentamiento calienta las baterías en condiciones de frío extremo, lo que permite hacer arrancar un vehículo incluso a temperaturas extremadamente bajas. Además de arrancar, la unidad SL1639 actúa como fuente de alimentación USB de carga rápida. Dispone de dos puertos de salida USB. El puerto USB de 2.4 A carga dos veces más rápido y el puerto USB de 3 A carga cuatro veces más rápido que el USB estándar. La unidad SL1639 también incorpora una luz de área con tres modos de iluminación: fija, intermitente (SOS) y estroboscópica. Además, incluye una entrada USB de 2 A para recar ultrarrápidas, una pantalla digital LCD extragrande y pinzas inteligentes y seguras con protección contra polaridad inversa, cortocircuito, baterías agotadas, alta temperatura y carga inversa.