NOCO Boost GB40 12V 1000A UltraSafe Portable Lithium Jump Starter | Spark-Proof & Reverse Polarity Protection, For Car, Truck, Motorcycle, SUV, Boat, ATV,...
Features
| Battery Type | Lithium |
| Voltage | 12 volts |
| Compatible with Vehicle Type | ATV, Motorcycle, Passenger Car, RV, Tractor, Truck, UTV, Van, Watercraft |
| Battery Capacity | 2150 milliamp_hours |
| Amperage | 1000 A |
| Peak Output Current | 1000 A |
| Automotive Fit Type | Universal Fit |
| Item Dimensions D x W x H | 4.61"D x 8.19"W x 4.21"H |
| Item Weight | 2.4 pounds |
| Specification Met | UL |
| Brand Name | NOCO |
| Manufacturer Part Number | GB40 |
| Manufacturer | NOCO |
| UPC | 046221150025 |
| Global Trade Identification Number | 00046221150025 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Unit Count | 1 Count |
| Included Components | 1-Year Limited Warranty, GB40 Portable Car Battery Jump Starter Pack, Heavy-Duty Booster Clamps, Microfiber Storage Bag, USB-C Charging Cable, User Guide for Jump Starter |
| Item Type Name | NOCO Boost Plus GB40 1000 Amp 12-Volt UltraSafe Lithium Jump Starter Box, Car Battery Booster Pack, Portable Power Bank Charger, And Jumper Cables For 6-Liter Gasoline And 3-Liter Diesel Engines |
| Model Number | GB40 |
| Manufacturer Warranty Description | 1-Year Limited Warranty |
| ASIN | B015TKUPIC |
- 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,...
NOCO Boost GB70: 2000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 8.0L Gas and 6.0L...
Features
| Battery Type | Lithium Ion |
| Voltage | 12 volts |
| Compatible with Vehicle Type | ATV, Motorcycle, Passenger Car, RV, Tractor, Truck, UTV, Van, Watercraft |
| Battery Capacity | 5000 milliamp_hours |
| Amperage | 2000 A |
| Peak Output Current | 2000 A |
| Automotive Fit Type | Universal Fit |
| Item Dimensions D x W x H | 7.4"D x 3.7"W x 12.6"H |
| Item Weight | 5 pounds |
| Specification Met | UL |
| Brand Name | NOCO |
| Manufacturer Part Number | GB70 |
| Manufacturer | NOCO |
| UPC | 046221150056 |
| Global Trade Identification Number | 00046221150056 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Unit Count | 1 Count |
| Included Components | 1-Year Limited Warranty, GB70 Portable Car Battery Jump Starter Pack, Heavy-Duty Booster Clamps, Microfiber Storage Bag, USB-C Charging Cable, User Guide for Jump Starter, XGC Cable, XGC Male and Female Connectors |
| Model Number | GB70 |
| Manufacturer Warranty Description | 1-Year Limited Warranty |
| ASIN | B016UG6PWE |
- START DEAD BATTERIES — Instantly start dead batteries with 2000 amps of peak lithium power. Up to 40 starts per charge on engines up to 8.0L gas and 6.0L 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 6 hours so it’s ready when it matters most.
- INTEGRATED LED FLASHLIGHT — Precision-engineered 400-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 5.0 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,...
NOCO Boost GB50: 1500A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 7.0L Gas and 4.5L...
Features
| Battery Type | Lithium |
| Voltage | 12 volts |
| Compatible with Vehicle Type | ATV, Motorcycle, Passenger Car, RV, Tractor, Truck, UTV, Van, Watercraft |
| Battery Capacity | 3.15 amp_hours |
| Amperage | 1500 A |
| Peak Output Current | 1500 A |
| Automotive Fit Type | Universal Fit |
| Item Dimensions D x W x H | 4"D x 8.25"W x 4.75"H |
| Item Weight | 3.3 pounds |
| Specification Met | UL |
| EU Spare Part Availability Duration | 1 years |
| Brand Name | NOCO |
| Manufacturer Part Number | GB50 |
| Manufacturer | NOCO |
| UPC | 046221180176 |
| Global Trade Identification Number | 00046221180176 |
| Number of Items | 1 |
| Unit Count | 1 Count |
| Included Components | 1-Year Limited Warranty, GB50 Portable Car Battery Jump Starter Pack, Heavy-Duty Booster Clamps, Microfiber Storage Bag, USB-C Charging Cable, User Guide for Jump Starter |
| Item Type Name | NOCO Boost XL GB50 1500 Amp 12-Volt UltraSafe Lithium Jump Starter Box, Car Battery Booster Pack, Portable Power Bank Charger, And Jumper Cables For 7-Liter Gasoline And 4-Liter Diesel Engines |
| Model Number | GB50 |
| Manufacturer Warranty Description | 1-Year Limited |
| ASIN | B07MVY7K43 |
- START DEAD BATTERIES — Instantly start dead batteries with 1500 amps of peak lithium power. Up to 30 starts per charge on engines up to 7.0L gas and 4.5L 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 5 hours so it’s ready when it matters most.
- INTEGRATED LED FLASHLIGHT — Precision-engineered 200-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 2.7 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 — GB50 jump starter, heavy-duty clamps, USB-C charging cable, and microfiber storage bag. Backed by a 1-year warranty and engineered in the USA.
A compact jump starter feels ample—until a cold, reluctant engine asks for more than a headline number.
At dawn, a marginal battery and thick, cold oil can turn an ordinary start into a high-current event. Peak amps are not the whole story: engine displacement, gasoline versus diesel ignition loads, cable losses, pack temperature, and the battery’s state all shape whether the starter can deliver.
The GB40’s small footprint is reassuring for routine, healthy-battery emergencies. But repeated starts, larger engines, deeply discharged batteries, or severe cold draw down a compact pack quickly. The GB70’s larger reserve and higher output create more margin; that matters when a no-start is not a one-off inconvenience.
- Cold weather raises cranking demand while reducing lithium-pack performance.
- A weak vehicle battery can require more than one boost attempt.
Choose the reserve that will actually get carried
A larger pack can offer more attempts between charges, particularly after repeated starts. Its advantage disappears if it stays in a garage because it is cumbersome, or if its charge level is ignored. Engine-size ratings set a useful ceiling; cold weather, battery failure, and cable connections still determine whether a start succeeds.
What the ratings really reveal
Jump starter specs and headroom
Peak current is a short burst available at the clamps, not a measure of stored energy. The GB40’s 1,000A rating can suit many passenger vehicles, while the GB70’s 2,000A provides more cranking headroom for larger engines and difficult starts. Compatibility, however, rests on the supported gasoline and diesel displacement limits in NOCO’s current manual—not amperage headlines alone. This matters especially when doing a NOCO jump starter comparison to assess power needs for an SUV.
In a NOCO jump starter comparison, watt-hours (Wh) are the clearer reserve: roughly 24Wh for the GB40 versus 56Wh for the GB70. The GB70 therefore holds a little over twice the energy, which can matter for repeat jump attempts, cold weather, and power-bank use. Amp-hour figures are less useful unless the battery voltage is also stated.
Both units’ 5V/2.1A USB output is adequate for phones and smaller accessories, but it is not comparable with modern high-watt USB-C charging. The GB70’s advantage is stored energy, rather than meaningfully faster USB charging.
The GB70’s roughly 56Wh reserve is a little over twice the GB40’s roughly 24Wh, which matters most for repeat jump attempts, cold weather, and using either pack as a USB power bank. A higher peak-amp figure alone does not reveal how many attempts a pack has left after the first try.
NOCO GB40: the jump starter that stays in the car
Best for everyday cars and smaller engines
The GB40 is a 12-volt lithium jump starter built around carry-anywhere practicality rather than maximum reserve. At 2.4 pounds and roughly 8.2 inches long, it is easy to leave in a glovebox, center console, or small roadside kit—an important advantage over a larger pack that remains at home. Its stated fit covers many everyday passenger vehicles, motorcycles, and light-duty trucks, with gasoline engines up to 6.0L and diesel engines up to 3.0L.
It makes the most sense for a vehicle with a fundamentally healthy battery that occasionally needs recovery after an interior light, short-trip use, or a seasonal lapse. The GB40 is not the natural match for large-displacement diesel, heavily accessorized vehicles, or a battery that has been deeply discharged in freezing weather. In those cases, repeated cranking attempts can consume its limited reserve quickly; correcting the underlying battery or charging-system problem still matters.
| Peak current | 1,000A |
| Battery type | 12V lithium |
| Gas engines | Up to 6.0L |
| Diesel engines | Up to 3.0L |
| Rated starts | Up to 20 |
| Weight | 2.4 lb |
| Length | 8.19 in |
| LED light | 100 lumens |
- Small enough to remain in a passenger vehicle
- Appropriate engine limits for many daily drivers
- Spark-proof clamps and reverse-polarity protection
- USB power bank and emergency light add utility
- Less reserve than the GB70 after multiple starts
- Deeply depleted batteries can demand more than a compact pack can comfortably supply
- Cold weather and larger engines narrow its practical margin
- Not rated for diesels above 3.0L
NOCO GB70 for larger engines and shared vehicles
Best for large engines and repeated jump starts
The GB70 is the step up for a household that includes a larger gasoline vehicle, a qualifying diesel, or more than one 12-volt vehicle. Its purpose is not merely a higher peak-current figure: it brings more energy reserve for repeat attempts and the tougher electrical demand often seen in cold-weather starts.
At about 5 pounds, it is more likely to live in a trunk, garage, or work vehicle than a glovebox. That trade can make sense when one pack needs to cover a truck, SUV, boat, RV, or family fleet.
- More reserve for repeat starts
- Supports larger listed engines
- Useful across a mixed vehicle fleet
- Bulkier than the GB40
- Diesel limit still matters
- Reserve falls in severe cold
A jump pack can supply a short burst of starting current; it cannot restore a failed battery, repair corroded cables, or overcome a bad starter, fuel issue, immobilizer fault, or charging-system problem.
If a vehicle repeatedly needs assistance after being driven, its battery and charging system merit diagnosis. The GB70’s 6.0L diesel rating is also a compatibility ceiling, not a promise that every diesel condition will start.
GB50 adds useful reserve without GB70 bulk
A practical middle ground for varied vehicles
The GB50 is the meaningful step between the compact GB40 and the trunk-oriented GB70. Its 1,500A rating and 7.0L-gas/4.5L-diesel fit give it extra cranking margin for larger daily drivers, while its 3.3-pound, 8.25-inch body remains realistic for a vehicle kit. In cold weather, that reserve matters more after a failed attempt: it is less likely to feel spent after one demanding start than the GB40. It also leaves more practical USB-C power-bank runtime, though the GB70 remains the stronger choice for repeated recoveries or heavy diesel duty.
| Peak output | 1,500A |
| Gas engines | 7.0L gas |
| Diesel engines | 4.5L diesel |
| Jump starts | Up to 30 |
| Weight | 3.3 lb |
| Size | 8.25 × 4.75 × 4 in |
| Power bank | USB-C |
| Flashlight | 200 lumens |
- Noticeably more cold-start and repeat-start margin than GB40
- Still compact enough for regular vehicle storage
- Useful engine range for many SUVs and light trucks
- Less reserve than GB70 for shared-vehicle or diesel use
- Bulkier than the GB40 for glovebox carry
| Compact daily carry NOCO GB40 Compact 1000A Vehicle Jump Starter | VS | Large-engine reserve NOCO GB70 Powerful 2000A High-Capacity Jump Starter |
|---|---|---|
6.0L gas / 3.0L diesel | Published engine limit |
8.0L gas / 6.0L diesel |
2,150 mAh | Stored capacity |
5,000 mAh |
2 | Cold or repeat starts |
3 |
Glovebox or small bag | Most natural home |
Trunk or shared vehicle |
| Check fit | Check fit |
Capacity follows the vehicle’s risk profile
A healthy compact car with an occasional light-left-on incident generally aligns with the GB40. Its 1,000A rating and stated 6.0L gasoline/3.0L diesel limits leave practical room for routine 12V emergency starts, while its smaller format makes it more likely to remain on board.
The GB70 makes more sense when the starter faces higher resistance: a larger gasoline or diesel engine, sustained freezing weather, a vehicle that sits for weeks, or several vehicles drawing from one pack. Its greater energy reserve matters after more than one attempt, but it is not a substitute for diagnosing a battery that repeatedly goes flat.
A jump pack delivers a short, high-current rescue; it does not recharge or restore a sulfated, aging battery. After a successful start, battery state and charging-system behavior still merit attention. Check the pack’s charge periodically, top it up before a trip or cold season, and store it dry within the maker’s stated temperature range. Consider the trade-offs of keeping a lithium jump pack in the vehicle, especially through extreme heat or cold.
A quarterly charge check is a sensible baseline; inspect clamps and cables at the same time. A pack that needs frequent recharging may be signaling storage losses or a failing internal battery.
NOCO GB40 vs. GB70: Common Questions
What's the real difference between the GB40 and GB70?
Peak current (1,000A vs 2,000A) matters less than stored energy: the GB70’s roughly 56Wh reserve is a little over twice the GB40’s roughly 24Wh. That extra reserve matters for repeat jump attempts, cold weather, and larger engines, while the GB40’s 2.4-pound size makes it easier to actually keep in the car.
Can a jump starter fix a car that repeatedly won't start?
No. A jump pack can supply a short burst of starting current, but it cannot restore a failed battery, repair corroded cables, or overcome a bad starter, fuel issue, immobilizer fault, or charging-system problem. A vehicle that repeatedly needs assistance needs its battery and charging system diagnosed.
Is the GB50 a reasonable compromise between the GB40 and GB70?
Yes, for many drivers. The GB50’s 1,500A rating and 7.0L-gas/4.5L-diesel fit give it more cranking margin than the GB40 while its 3.3-pound body stays realistic for regular vehicle storage, making it a sensible middle ground for larger daily drivers or colder climates.
How often should a jump starter be charged while in storage?
A quarterly charge check is a sensible baseline, with clamps and cables inspected at the same time. A pack that needs frequent recharging may be signaling storage losses or a failing internal battery.
Choose fit first, then buy enough margin
- Check NOCO’s current manufacturer-supported engine limits before comparing amp claims.
- Allow extra reserve for freezing weather, an aging battery, and more than one start attempt.
- A compact pack carried consistently can be more useful than a larger one left behind.
Start with the model officially rated for the vehicle’s engine, then choose the smallest pack that retains credible reserve for its conditions. The GB40 fits routine compact-car backup; the GB50 adds a more portable middle ground for colder climates or occasional repeat starts; and the GB70 is the sensible step up for larger engines, shared vehicles, and heavier recovery demands.
Frequently Asked Questions
What's the difference between the NOCO GB40, GB50, and GB70?
The GB40 provides 1,000 amps and 12 Wh; the GB50 adds 1,200 amps and 13.6 Wh; the GB70 reaches 2,000 amps and 25 Wh. Choose based on your vehicle’s engine size and how much reserve capacity you want for repeated jumps.
Can a NOCO jump starter charge my phone?
Most NOCO models include USB-A or USB-C outputs that can charge phones, tablets, and small devices, making the jump starter also serve as a portable power bank during travel.
How often should I recharge a NOCO jump starter?
Recharge every 3–6 months when not in use, or after each use if you’ve drained significant capacity. Storing it in a cool, dry place helps preserve battery health over time.
7 Comments
Does anyone know if the GB50 is noticeably awkward in a sedan compared with the GB40? I want more margin for road trips but don’t want a mini brick rolling around in the trunk. The GB70 sounds great until you remember you have to lug it around 😅
The GB50 is a meaningful size and weight increase over the GB40, but at roughly 3.3 pounds it is still easy to store in a trunk organizer, under-seat bin, or roadside kit. The GB70 is more naturally a trunk, truck, or shared-use pack; the GB40 remains the easiest one to keep in a small vehicle full-time.
I keep my GB50 in a small zip case beside the spare in a Corolla. It is not tiny, but it has never felt cumbersome. I picked it over the 40 because I do a lot of winter highway driving.
The “reserve you’ll actually carry” point is spot on. I bought a GB40 for my Civic because it fits in the little compartment by the spare tire, and that means it is actually there when I need it. For one normal dead-battery incident, it has been plenty.
We use one starter between a landscaping truck, a diesel tractor, and a couple employee cars. In that situation the GB70 seems like the obvious choice, even at 5 pounds. It would live in the shop truck, not somebody’s jacket pocket.
The stated 8.0L gas / 6.0L diesel limits are more useful to me than a giant peak-amp claim. Which one did you end up choosing for shared-vehicle use?
For a shared fleet or mixed-equipment setup, I would lean GB70 as well. Its greater reserve is valuable when it may be used multiple times before recharging, and its engine headroom better matches your tractor and truck use. Just verify the diesel engine displacement against the published limit.
Our maintenance crew went GB70. Mostly because the pack gets passed around and nobody reliably charges it after every use… shocker, I know. The bigger reserve has been worth it.