• START DEAD BATTERIES — Instantly start dead batteries with 1000 amps of peak lithium power. Up to 20 starts per charge on engines up to 6.0L gas and 3.0L diesel.
• ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse polarity protection for foolproof connections to any 12V vehicle - no sparks, no wrong connections.
• PORTABLE POWER BANK — Integrated power bank delivers emergency power to smartphones, tablets, and more. Recharges in 3 hours so it’s ready when it matters most.
• INTEGRATED LED FLASHLIGHT — Precision-engineered 100-lumen LED with 7 light modes, including SOS and strobe. Illuminate repairs, emergencies, or low-light environments.
• COMPACT YET POWERFUL — High-discharge lithium technology delivers exceptional starting performance in a compact 2.5 lb form factor - perfectly sized for glove boxes and emergency kits.
• BUILT TOUGH — Rugged IP65-rated housing with rubberized over-molding protects against water, dust, and impact. Includes high-conductivity clamps for maximum energy transfer.
• WHAT’S IN THE BOX — GB40 jump starter, heavy-duty clamps, USB-C charging cable, and microfiber storage bag. Backed by a 1-year warranty and engineered in the USA.

The NOCO Boost GB40 is a compact yet powerful 1000-amp lithium jump starter designed to safely jump start a dead car battery in seconds—perfect for cars, trucks, motorcycles, ATVs, boats, SUVs, vans, and more. This portable car battery jump starter delivers up to 20 jump starts on a single charge and is rated for gasoline engines up to 6.0 liters and diesel engines up to 3.0 liters. Engineered with UltraSafe Technology, it features spark-proof connections and reverse polarity protection, making it a safe and mistake-proof car battery booster for any 12-volt vehicle. It doubles as a portable USB-C power bank for charging smartphones, tablets, and other devices when it matters most, and includes an integrated 100-lumen LED flashlight with seven light modes, including SOS and emergency strobe—ideal for night use, roadside visibility, or emergencies. With an ultra-compact, rugged design, IP65-rated enclosure, and rubberized over-molded casing, this battery jump starter pack is built tough to withstand water, dust, drops, and rough handling. The GB40 includes heavy-duty jumper cables, a USB-C charging cable, and a microfiber storage bag, all backed by a 1-year warranty and proudly designed in the USA. Whether you’re looking for a car jump starter, battery jump box, jumper pack, power pack jump starter, or a reliable jump starter battery pack to keep in your glovebox, the GB40 delivers unmatched performance, trusted durability, and peace of mind—on the road, off the grid, or wherever your next adventure takes you.

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GB40

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GB20

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Customer Reviews

4.6 out of 5 stars 124,372

4.6 out of 5 stars 12,428

4.6 out of 5 stars 15,878

4.6 out of 5 stars 29,151

4.5 out of 5 stars 12,392

Price

$99.95$99.95 $79.95$79.95 $149.95$149.95 $199.95$199.95 $299.95$299.95 Amps

1000 Amps 500 Amps 1500 Amps 2000 Amps 3000 Amps Gas Engines

Up to 6.0 Liters Up to 4.0 Liters Up to 7.0 Liters Up to 8.0 Liters Up to 9.0 Liters Diesel Engines

Up to 3.0 Liters - Up to 4.5 Liters Up to 6.0 Liters Up to 7.0 Liters LED Lumens

100 Lumens 100 Lumens 200 Lumens 400 Lumens 500 Lumens 12V Power Port

✘ ✘ ✘ ✔ ✔ Jump Starts Per Charge

Up to 20 Up to 20 Up to 30 Up to 40 Up to 80