The Boost HD GB70 is the pick for big-engine and diesel owners. 2000A reliably cranks 8.0L gas and 6.0L diesel motors, the 40-jump reserve means you can forget about it for months, and the rugged cables shrug off shop and trail abuse. The trade-offs are weight, bulk and a dated micro-USB charging port.
Full review
Real-World Performance
Automoblog scored the GB70 a 90 out of 100 and praised its intelligence as much as its power: 'The GB70 only delivers the juice required by the battery needing a jump. Essentially, it can tell the difference between a lawnmower battery and a truck battery and adjust its power delivery accordingly.' That smart current management protects both the connected vehicle and the GB70's own cells, and it is a meaningful step up from budget units that simply dump their full output regardless of the load.
The 2000A peak handles gas engines up to 8.0 liters and diesels up to 6.0 liters, which covers full-size trucks, large SUVs and most diesel pickups, the vehicles a 1000A unit struggles with. AutoZone owners give it a 4.6-star average across more than 200 reviews, and Home Depot buyers echo the 40-jumps-per-charge claim that makes the GB70 a true set-and-forget trunk tool. In cold-start scenarios, on a deeply discharged battery in winter, it is the unit reviewers reach for when a smaller starter would labor or fail outright. The combination of high peak amps and large reserve is exactly what big-engine owners are paying for.
Build Quality and Design
Automoblog called the GB70's cables and clamps 'thick and rugged, well-suited for repeated outdoor use, perhaps even over-engineered for what the average consumer would need.' That over-engineering is the point: the 8AWG conductors and beefy clamps are built for shop, fleet and trail use where a flimsier unit would fray or melt under repeated heavy loads. The clamps grip larger battery terminals confidently, and the longer, heavier-gauge cables reach awkward battery placements that defeat the GB40's short leads.
The GB70 carries the same UltraSafe spark-proof, reverse-polarity-protected design as the rest of the NOCO line, plus a 400-lumen flashlight with seven modes that is genuinely bright enough to work by at night under a hood. The housing is rugged and water-resistant, suited to glovebox-free storage in a truck bed toolbox. The penalty is size and weight: at around 5 pounds it is more than double the GB40 and noticeably bulkier in the hand, which is the unavoidable cost of the larger battery and heavier cabling.
Battery Life and Power
The headline reserve figure is up to 40 jump-starts on a single charge, double the GB40, which means a GB70 left in a truck bed toolbox can go a full season between top-ups without going flat. For fleet operators and anyone who jumps multiple vehicles in a row, that endurance is the differentiator: you are not recharging after every couple of uses.
It also works as a USB power bank, though at 2.1A USB-A it charges devices slowly by modern standards and, critically, has no USB-C input or output. That dated charging interface is the GB70's biggest functional weakness relative to the newer GBX55, whose 60W USB-C port refills far faster and can power laptops. For owners who keep the unit charged on a schedule, however, the sheer reserve capacity means recharge speed rarely matters in practice; the GB70 is built to be ready, not to be refilled quickly in a pinch.
Where It Falls Short
The GB70 is heavy, large and expensive: at roughly $230 it costs about double the GB40 and, at typical sale prices, often more than the higher-peak WOLFBOX MegaVolt24. For a driver who only ever jumps a four-cylinder commuter, that is money and bulk spent on capability they will never use, and the GB40 would serve them better for less.
The lack of USB-C is the other real limitation: in 2026 a flagship-priced jump starter that still recharges over micro-USB feels behind, especially next to the GBX55. And while 2000A is ample for almost any consumer vehicle, the WOLFBOX MegaVolt24's 4000A peak and 10L engine rating technically out-spec it for the very largest commercial diesels, at a similar or lower price. The GB70's pitch rests on NOCO's reliability and rugged cabling rather than on leading the spec sheet.
Value at This Price
You pay a premium for the GB70, but you get the most reserve capacity and the most rugged cabling of any mainstream NOCO unit, backed by the brand's reliability reputation and warranty support. For buyers whose vehicles or workload genuinely demand 2000A and 40-jump endurance, that premium buys exactly the right tool.
Against the GOOLOO GP2000, which matches its 2000A peak for roughly a third of the price, the GB70 wins decisively on build quality, smart current delivery and owner-reported longevity, the areas that matter most when you cannot afford a no-start. It is the unit to buy when downtime is expensive and you cannot risk a jump starter that quits, which is precisely the calculus for fleet, RV, diesel and commercial owners. For an ordinary car, though, it is more unit than the value math justifies.
Who It's Best For
Choose the GB70 if you own a large gas truck, a V8, a diesel pickup, an RV or a boat, and you want maximum cranking reserve plus cables that will survive years of heavy, repeated use. It is also the right pick for anyone who jumps several vehicles between charges or stores the unit in harsh conditions and wants to top it up only rarely.
Pass on it if you drive an ordinary car, in which case the cheaper, lighter GB40 does everything you need at half the price and bulk. Pass too if fast USB-C recharge and laptop charging matter more to you than reserve capacity, where the GBX55 fits better, or if you want the most raw power and battery capacity per dollar, where the WOLFBOX MegaVolt24 is the stronger buy. The GB70 is a specialist's tool, and for that specialist it is excellent.
How It Compares to Alternatives
The GB70's competition splits cleanly. Below it, the NOCO Boost Plus GB40 is smaller, cheaper and easier to stash, but its 1000A peak is not enough for the big diesels the GB70 targets. The NOCO Boost X GBX55 sits between the two on power and adds modern USB-C charging, making it the better travel unit, while sacrificing some of the GB70's reserve and rugged cabling.
The real cross-shop is the WOLFBOX MegaVolt24, which often costs the same or less while offering 4000A peak, a far larger battery and 65W USB-C, plus a lifetime warranty. On raw specs the MegaVolt24 wins; the GB70's counterargument is NOCO's longer reliability record and its over-built clamps and cables, which matter most for repeated heavy-duty use. The GOOLOO GP2000 matches the GB70's 2000A peak for a third of the price but cannot match its build or consistency. For a buyer who values proven durability over spec-sheet leadership, the GB70 still earns its keep.
Strengths
- +2000A peak output covers 8.0L gas and 6.0L diesel engines, including big trucks and SUVs
- +Up to 40 jumps per charge so it rarely needs a top-up in the trunk
- +400-lumen flashlight with seven modes including SOS and strobe
- +Over-engineered 8AWG clamp cables built for repeated heavy-duty outdoor use
- +Smart sensing delivers only the current the connected battery needs, protecting electronics
Watch-outs
- −Heavy at roughly 5 lb and physically larger than the GB40 or GBX55
- −No USB-C input or output, so recharging is slower than the GBX55
- −At around $230 it is double the price of the GB40
- −Overkill for someone who only jumps a four-cylinder commuter car
How it compares
The big-engine specialist. It doubles the 1000A NOCO Boost Plus GB40 on cranking reserve and matches the on-paper peak of the GOOLOO GP2000 while far exceeding its reliability, and it outlasts the 1750A NOCO Boost X GBX55 on jumps per charge, though the GBX55 charges faster over USB-C and the WOLFBOX MegaVolt24 still beats it on raw 4000A peak.
Who this is for
At a glance: owners of large gas trucks, V8s and diesel engines who want maximum cranking reserve and rugged cables.
Why you’d buy the NOCO Boost HD GB70
- 2000A peak output covers 8.0L gas and 6.0L diesel engines, including big trucks and SUVs.
- Up to 40 jumps per charge so it rarely needs a top-up in the trunk.
- 400-lumen flashlight with seven modes including SOS and strobe.
Why you’d skip it
- Heavy at roughly 5 lb and physically larger than the GB40 or GBX55.
- No USB-C input or output, so recharging is slower than the GBX55.
- At around $230 it is double the price of the GB40.
Rating sources
“Durable and compact, the 2,000-amp GB70 accommodates nearly every vehicle.”
“The 400-lumen flashlight, integrated charging bank, helpful safety features, and heavy-duty construction make the GB70 a good value for the money.”
“Provides up to 40 jump starts on a single charge and supports gas engines up to 8.0 liters and diesel engines up to 6.0 liters.”
Our 4.6 score is the average of these published ratings. Ratings marked * were derived from the reviewer’s written analysis or video transcript — the publisher didn’t print an explicit numeric score, so we inferred one from their own words. Click through to verify. More about methodology.
