NOCO - Boost X GBX45: 1250A UltraSafe Jump Starter – 12V Portable Lithium Battery Booster Pack – 6.5L Gas & 4.0L Diesel
About this product
The GBX45 Boost X is a new class of portable lithium jump starters—engineered for extreme performance and rated at 1,250 amps to start gas engines up to 6.5 liters and diesel engines up to 4.0 liters. Featuring our upgraded UltraSafe 2.0 technology, it offers spark-proof connections and reverse polarity protection, now with enhanced thermal efficiency and power management for even greater safety and battery life. Designed with a high-voltage output system, the GBX45 includes an integrated 60-second timer to conserve energy—delivering up to 6 jump starts per charge with maximum power on every start. Even if completely depleted, it can gain enough power for a jump start in just 5 minutes or fully recharge in only 48 minutes via USB-C Power Delivery. A 60-watt USB-C port provides both input and output, turning Boost X into a high-performance power bank for fast charging phones, tablets, laptops, and other USB-C devices. A precision-engineered 100-lumen LED flashlight features seven modes, including SOS and strobe, to light up dark workspaces or help in roadside emergencies. The GBX45 jump starter comes complete with heavy-duty jumper clamps, a USB-C charging cable, and a microfiber storage bag, all backed by a 1-year limited warranty and proudly engineered 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 GBX45 delivers unmatched performance, trusted durability, and peace of mind—on the road, off the grid, or wherever your next adventure takes you.
Features
X FOR EXTREME
A new class of lithium jump starters. Rated at 1,250 amps for powerful starts on gas engines up to 6.5L and diesel engines up to 4.0L - built for extreme performance.
ULTRASAFE 2.0
Upgraded spark-proof and reverse polarity protection with enhanced thermal efficiency and power management for even safer operation and extended battery life.
TURBO CHARGEABLE
Recharges in just 48 minutes via USB-C Power Delivery, or gain enough power for a jump start in just 5 minutes - even from a completely depleted battery.
60-SECOND TIMER
Integrated 60-second timer conserves power from its high-voltage design - delivering up to 6 jump starts per charge with extreme energy at every start.
CHARGE EVERYTHING
60-watt USB-C Power Delivery lets you charge phones, tablets, laptops, and more. Dual-direction charging turns Boost X into a high-output portable power bank.
Specifications
- BrandNOCOModel NumberGBX45Product NameNOCO Boost X GBX45: 1250A UltraSafe Jump Starter – 12V Portable Lithium Battery Booster Pack – 6.5L Gas & 4.0L DieselAmperage1250Voltage12VCompatible Battery TypeLead acid, Lithium-ion
Reviews
Rating 4 out of 5 stars with 4 reviews
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Compare similar products
The GBX45 Boost X is a new class of portable lithium jump starters—engineered for extreme performance and rated at 1,250 amps to start gas engines up to 6.5 liters and diesel engines up to 4.0 liters. Featuring our upgraded UltraSafe 2.0 technology, it offers spark-proof connections and reverse polarity protection, now with enhanced thermal efficiency and power management for even greater safety and battery life. Designed with a high-voltage output system, the GBX45 includes an integrated 60-second timer to conserve energy—delivering up to 6 jump starts per charge with maximum power on every start. Even if completely depleted, it can gain enough power for a jump start in just 5 minutes or fully recharge in only 48 minutes via USB-C Power Delivery. A 60-watt USB-C port provides both input and output, turning Boost X into a high-performance power bank for fast charging phones, tablets, laptops, and other USB-C devices. A precision-engineered 100-lumen LED flashlight features seven modes, including SOS and strobe, to light up dark workspaces or help in roadside emergencies. The GBX45 jump starter comes complete with heavy-duty jumper clamps, a USB-C charging cable, and a microfiber storage bag, all backed by a 1-year limited warranty and proudly engineered 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 GBX45 delivers unmatched performance, trusted durability, and peace of mind—on the road, off the grid, or wherever your next adventure takes you.
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.
The NOCO Boost GB50 is a compact yet powerful 1500-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 30 jump starts on a single charge and is rated for gasoline engines up to 7.0 liters and diesel engines up to 4.5 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 200-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 GB50 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 GB50 delivers unmatched performance, trusted durability, and peace of mind—on the road, off the grid, or wherever your next adventure takes you.
The NOCO Boost GB70 is a compact yet powerful 2000-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 40 jump starts on a single charge and is rated for gasoline engines up to 8.0 liters and diesel engines up to 6.0 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 400-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 GB70 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 GB70 delivers unmatched performance, trusted durability, and peace of mind—on the road, off the grid, or wherever your next adventure takes you.
| Pros for NOCO - Boost X GBX45: 1250A UltraSafe Jump Starter – 12V Portable Lithium Battery Booster Pack – 6.5L Gas & 4.0L Diesel | |||
|---|---|---|---|
| There were no pros for this product— | Overall Performance | There were no pros for this product— | Overall Performance |
Specs
Questions & Answers
What's include in the box?
Answered by NOCO Product ExpertThe GBX45 comes with one pair of HD Precision Battery Clamps, a USB-C to USB-C Cable, a Microfiber Storage Bag, and the Safety & Warranty Information pamphlet.
Can I use it on a hybrid vehicle?
Answered by NOCO Product ExpertYes, the GBX45 is compatible with most hybrid vehicles. We recommend checking with your dealership for more information on jump-starting your vehicle.
how do i charge up the Boost X..GBX45 1250A iin order to jup my car?
Answered by NOCO Product ExpertA USB-C compliant charger is needed to achieve the fastest charge possible for the GBX. The U65 is the NOCO brand fast charger. Non-NOCO chargers must exactly match the USB-C compliant specs listed below for the fastest charge: 5V @ 3A (15W) 9V @ 3A (27W) 12V @ 3A (36W) 15V @ 3A (45W) 20V @ 3A (60W) - Fast Charge LED illuminated If the charger does not follow the standards above, even if it is branded as a ""fast charger,"" the GBX will default to charging at 5V and a slower charge rate.
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