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Schumacher Electric

Schumacher Electric 800 Peak Amp 12V Portable Lithium Car Battery Jump Starter & Power Pack - Lithium Ion Jump Box - with USB Charging & LED Emergency Light - SL1638

  • Based on 427 reviews
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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Wednesday, Aug 12
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Style: 800 Amp


Features

  • Compact and Powerful - This portable jump box delivers 800 peak amps to jump start up to 6-cylinder gas engines, including cars, motorcycles, ATVs, and more.
  • Portable Power for Emergencies - Serves as a car battery jump starter, USB power bank, and emergency LED flashlight with steady, SOS, and strobe modes. Lightweight and compact, easily fits into a glove box, purse, or backpack; recharges fully in 4 hours.
  • Fast USB Charging - Equipped with a 2.4A USB port for rapidly charging smartphones, tablets, and other USB devices.
  • Built-In Safety Features - Jump pack includes smart cables with spark-free protection against overcurrent, short circuit, overload, overcharge, and reverse hook-up.
  • Trust in Schumacher - As a trusted name in car accessories, we proudly back every charger, jump starter and maintainer we release. Our products are designed to offer unmatched durability, value and quality at every turn.

Description

Be prepared for unexpected battery failures with the Schumacher SL1638, a compact yet powerful lithium battery jump starter delivering 800 peak amps. Designed to jump-start up to 6-cylinder vehicles, motorcycles, ATVs, and boats, this portable car jump starter ensures you're never stranded. Its internal lithium-ion battery provides up to 15 jump starts on a single charge, making it an essential battery jumper starter portable solution for emergencies. Beyond jump-starting, the SL1638 serves as a portable car battery charger, featuring a 2.4A USB port to quickly recharge smartphones, tablets, and other devices. Safety is paramount with smart cables and clamps offering spark-free protection against overcurrent, short circuits, overloads, and overcharges. The built-in three-mode LED light—steady, SOS, and strobe—adds versatility for roadside situations. Its lightweight, pocket-sized design allows easy storage in your glove box, backpack, or purse, ensuring this jump starter power pack is always within reach. Whether you're dealing with a dead battery or need a reliable power source on the go, the Schumacher SL1638 is your dependable jumper pack for car battery.

Brand: Schumacher Electric


Battery Cell Composition: Lithium Ion


Voltage: 12 Volts


Product Dimensions: 3.62"D x 5.04"W x 8.11"H


Vehicle Service Type: Lawn Mower, ATV, Jet Ski, Snowmobile, Motorcycle, Car, SUV, Tractor, Boat, Truck, RV


Battery Type: Lithium Ion


Voltage: 12 Volts


Compatible with Vehicle Type: Lawn Mower, ATV, Jet Ski, Snowmobile, Motorcycle, Car, SUV, Tractor, Boat, Truck, RV


Battery Capacity: 7200 Amp Hours


Amperage: 800 Amps


Peak Output Current: 800 Amps


Item Dimensions D x W x H: 3.62"D x 5.04"W x 8.11"H


Item Weight: 1.8 Pounds


Specification Met: UL


Brand Name: Schumacher Electric


Manufacturer Part Number: SL1638


Manufacturer: Schumacher Electric


UPC: 026666816380


Model Number: SL1638


Item Type Name: Jump Starter and Portable Power


Included Components: Jump Starter, User Manual


Manufacturer Warranty Description: 1 Year Warranty


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Aug 12

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • 100% recommended... a must to have!
Style: 800 Amp
Great price, easy to use and reliable. 100% satisfied!
Reviewed in the United States on April 12, 2026 by Martín Martínez González
    • Amazing!
Style: 800 Amp
I opened this tiny little thing and thought it would never work. I charged it up and it takes quite a while to charge. It says 2 1/2 hours, figure more like 6! And first use: It started my old Massey Ferguson tractor from a dead battery that would not even click the starter! I clipped it on, turned the key. Hmm, not very great, it would crank but not very fast. I left it hooked up for 45 seconds or so making sure the gas was turned on and everything set. Hit the starter button and that thing cranked like it had a new battery in it! Amazing! And this tractor has a 4.2 liter motor! ... show more
Reviewed in the United States on July 20, 2023 by Lonnie
    • WORKS WORKS WORKS nice case too
Style: 800 Amp
Fantastic product. Nice carrying case. Wirked great starting my bosses dead bus. I told him where I got it. He's getting one for esch of his 5 busses to put in yhe storage area below the drivers seat and recharging them on the first of the month slong with their other vehicle maintenance services.
Reviewed in the United States on December 14, 2025 by MUSTANG PATTY
    • Very good
Style: 800 Amp
Great tool and very reliable and handy
Reviewed in the United States on May 11, 2026 by Don murray
    • Not to hot, not too cold. Just right.
Style: 800 Amp
This has lasted for years and only given me a little trouble over all that time. It's conveniently sized enough to keep handy and works great for the most part. I have had some issues with it keeping a charge over long time periods but if you top it up, it does fine. It also failed to start a battery recently but the battery was completely drained so I don't hold it against the little fella. Even better, this was the only jumpstarter (of 3!) that could even get the battery to draw charge and attempt to turn over. I've had it for several years now, I wish the newer models were this good. Much better value for the money than bigger models. ... show more
Reviewed in the United States on October 16, 2025 by Nobody
    • Easy to use
Style: 800 Amp
I bought this on sale. Anything under $40 is a good deal. Used it when my battery went bad. I was able to jumpstart my suv and get home. So much better than finding someone to help using standard jumper cables.
Reviewed in the United States on December 15, 2025 by Chris
    • Returned: Non-functional, not as advertised.
Style: 800 Amp
Returning due to missing USB charger and manual. The battery also got pretty warm and completely drained while charging the first time. Connecting adapter is pretty large (not shown in any of their product photos).
Reviewed in the United States on November 24, 2025 by S. Lindner
    • Sweet small size amp for bike
Style: 800 Amp
Worked great and nice and small for my bike under seat.
Reviewed in the United States on December 13, 2025 by Brian

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