NOCO Boost Jump Starters: Which Current Model Fits Your Vehicle?
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NOCO Boost is no longer just one jump starter. The current range includes the original Boost series, the higher-output Boost X family, Boost Air combination units and commercial Boost Max equipment. That makes this page more useful as a family guide than as a simple “best NOCO” ranking.
The current original Boost lineup
| Model | NOCO peak rating | Gas engine guidance | Diesel engine guidance | Internal battery |
|---|---|---|---|---|
| GB20 | 500A | Up to 4.0L | Not listed | 24Wh lithium-ion |
| GB40 | 1,000A | Up to 6.0L | Up to 3.0L | 24Wh lithium-ion |
| GB50 | 1,500A | Up to 7.0L | Up to 4.5L | 35Wh lithium-ion |
| GB70 | 2,000A | Up to 8.0L | Up to 6.0L | 56Wh lithium-ion |
| GB150 | 3,000A | Up to 9.0L | Up to 7.0L | 88Wh lithium-ion |
Evidence level: Manufacturer specifications. These figures come from NOCO's current Boost support information. JumpStarterReviews has not yet physically tested this complete family, so the table reports manufacturer guidance rather than independent measured starting performance.
For many ordinary cars, start with fit rather than amps
A driver with a typical 12V passenger vehicle does not automatically benefit from carrying a GB150. NOCO itself tells buyers to use engine size when selecting within the family.
The GB40 is currently rated by NOCO for gasoline engines up to 6.0L and diesel engines up to 3.0L. The GB50 extends that guidance to 7.0L gasoline and 4.5L diesel. Larger models make more sense as engine size and starting demands rise.
Quick Car Tip
Write down your engine size before shopping. It is a much better starting point than standing in front of five boxes and choosing the biggest amp number.
GB40: the mainstream reference point
The current GB40 is a 12V lithium-ion jump starter rated by NOCO at 1,000 peak amps, with a 24Wh internal battery. NOCO lists it for gasoline engines up to 6.0L and diesel engines up to 3.0L.
Current specifications also list a 100-lumen flashlight, IP65 protection with the ports closed and a one-year warranty. It can supply USB power to personal devices, but NOCO explicitly says Boost is not a vehicle battery charger.
When to move up the range
The reason to move from GB40 to GB50, GB70 or GB150 should be a real requirement, such as a larger engine or more demanding vehicle application. The larger models also carry more internal battery energy, but that comes with additional size, weight and cost.
For example, NOCO currently lists the GB70 for gasoline engines up to 8.0L and diesel engines up to 6.0L, while the GB150 reaches up to 9.0L gasoline and 7.0L diesel.
Boost versus Boost X, Boost Air and Boost Max
The original Boost series is only one branch of NOCO's current lineup. Boost X offers a newer higher-output family. Boost Air combines jump starting with an air compressor. Boost Max is commercial-grade equipment, including 12V, 24V and dual-voltage models.
Do not move into another family merely because its numbers are larger. Boost Air makes sense when an inflator belongs in the same emergency tool. Boost Max solves professional and heavy-equipment problems that most passenger-car owners simply do not have.
Peak amps still do not tell the whole story
NOCO publishes peak-current ratings because they help distinguish models, but peak amps should not become the only buying criterion. Vehicle compatibility, engine size, battery condition, temperature, clamp access, storage and keeping the pack charged all affect real emergency usefulness.
Our recommendation method therefore uses the manufacturer's engine guidance as a compatibility screen rather than ranking the lineup from smallest to largest and declaring the biggest one “best.”
Cold weather changes the problem
Cold weather makes engine starting harder while also affecting battery performance. NOCO's GB40 data sheet lists an operating range of -4°F to 122°F (-20°C to 50°C) and a charging range of 32°F to 104°F (0°C to 40°C).
Those are different limits for different activities. Do not assume a jump starter that can operate below freezing can also be charged below freezing. Check the exact model's current instructions.
Boost is a jump starter, not a battery charger
NOCO specifically states that Boost can jump-start a vehicle battery but does not charge the vehicle battery. A successful start therefore does not mean the underlying battery problem has been fixed.
If the battery repeatedly needs assistance, diagnose the battery and charging system rather than treating the jump starter as routine maintenance equipment.
Compatibility and connection procedure come first
Critical voltage rule
The standard Boost models discussed here are for 12V starting applications. Do not connect one to a 24V system. Confirm the vehicle's low-voltage system and follow its approved jump-start connection procedure before attaching the clamps.
Some modern vehicles use remote jump points rather than direct battery-terminal access. The vehicle manual takes precedence over a generic connection routine.
Manual Override deserves special caution
NOCO provides a Manual Override function for situations where a deeply discharged battery is too low for normal detection. That feature intentionally changes the protection behavior used during ordinary connection.
Use it only when the exact model instructions call for it and only after polarity and connection points are positively identified. It is not a “more power” button for routine starts.
Hybrids and EVs require vehicle-specific instructions
A hybrid or EV may have a high-voltage traction battery plus a separate low-voltage system. A NOCO Boost is not a traction-battery charger. Any permitted low-voltage jump procedure must follow the vehicle manufacturer's designated points and instructions.
Stop before connecting when
- you cannot confirm a compatible 12V low-voltage system;
- the battery or jump starter is swollen, leaking, damaged or abnormally hot;
- the clamps or cables are damaged;
- you cannot identify the approved connection points; or
- the vehicle instructions prohibit or materially change the procedure.
Bottom line
The NOCO Boost family remains a current and well-supported range, which makes this very different from the older products elsewhere in our archive. The useful buying question is not “Which NOCO has the biggest number?” It is “Which current Boost correctly fits my vehicle and the way I will actually use it?”
For many passenger vehicles, the GB40 or GB50 may cover the manufacturer's stated engine-size requirement. Larger GB70 and GB150 models become relevant as engine demands increase. Buyers who need an inflator, newer Boost X architecture or commercial 24V capability should compare the appropriate NOCO family rather than oversizing within the original Boost range.
How JumpStarterReviews handles evidence
This page has been substantively rebuilt using NOCO's current product and support documentation. Product ratings and engine-size limits are labeled as manufacturer specifications. We do not convert those claims into independent test results or imply that JumpStarterReviews has physically tested the complete Boost family.