NOCO GB40 vs HULKMAN Alpha85: Full Comparison of Power, Features & Value (2026 Guide)
The short answer: The HULKMAN Alpha85 wins overall — it delivers double the amps, triple the battery capacity, and handles engines the NOCO GB40 simply can’t. But if you drive a regular car and want a compact, budget-friendly jump starter you’ll barely notice in your glovebox, the NOCO Boost Plus GB40 at $99.95 is hard to beat. Buy the Hulkman if you own a truck, diesel, or large SUV. Buy the NOCO if you need simplicity and a smaller price tag.
Your battery dies. It’s 11PM. No one’s around. You reach into your glovebox — and what you pull out either saves your night or doesn’t. That single moment is why the jump starter you pick actually matters. I’m Alex Rahman, and I’ve tested both the NOCO Boost Plus GB40 and the HULKMAN Alpha85 back to back. They look similar on a shelf. They are not the same product. One is a compact everyday tool. The other is a powerhouse built for big engines and cold mornings. Let me break down exactly what’s different — and which one is right for you.
- The HULKMAN Alpha85 wins overall — 2,000A vs 1,000A, 74 Wh vs 24 Wh, and 60 jump starts vs 20.
- The NOCO GB40 wins on portability — at 2.45 lbs it’s one of the lightest jump starters on the market.
- The GB40 cannot start diesel engines above 3.0L — a critical limit truck and van owners must know.
- The Alpha85 has a 3.3-inch smart display that shows battery level and error codes — the GB40 has no screen.
- At $99.95, the NOCO GB40 is a great value for sedan and small SUV owners. The Hulkman at $199.99 is worth every dollar for trucks and diesel vehicles.
| Category | NOCO GB40 | HULKMAN Alpha85 |
|---|---|---|
| Overall Winner | — | 🏆 |
| Best Value (Budget) | ✅ | ❌ |
| Best Performance | ❌ | ✅ |
| Best For Beginners | ✅ | ✅ |
| Best for Cold Weather / Diesel | ❌ | ✅ |
Product Overview: NOCO Boost Plus GB40
| ✅ Best for | Sedan and small SUV owners who want a compact, beginner-safe jump starter at an unbeatable price |
| ❌ Not ideal for | Diesel trucks, large V8s, or anyone who needs more than 3.0L diesel support — consider the NOCO GB70 instead |
| 💰 Price | ~$99.95 (check for latest price) |
The NOCO GB40 has earned its spot as one of the most popular jump starters in the country. It’s been around long enough to build a loyal following — and for good reason. It works, it’s safe, and it fits in your glovebox without a fight.
At its core, the GB40 delivers 1,000 amps of peak power from a 24 Wh lithium battery. That’s enough to start most cars, SUVs, boats, and motorcycles — anything with a gas engine up to 6.0 liters. For diesel, it tops out at 3.0 liters. That limit matters, and we’ll come back to it.
NOCO’s UltraSafe Technology is the real selling point for nervous first-timers. Spark-proof clamps and reverse polarity protection mean you can’t fry your car’s electronics even if you hook up the cables wrong. That’s genuinely reassuring at 2AM in a dark parking lot. The 100-lumen LED flashlight with seven modes — including SOS and emergency strobe — adds real utility beyond just starting engines.
It weighs 2.45 pounds. That’s lighter than most hardcover books. The rubber over-molded casing prevents scratches and handles drops well. The IP65 rating means rain and dust won’t kill it. At $99.95, it’s hard to argue with the package for everyday drivers.
NOCO Boost GB40: 1000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables – for 6.0L Gas and 3.0L Diesel Engines
The GB40 is the right choice for everyday car owners who want a trusted, beginner-safe jump starter that takes up almost no space.
Product Overview: HULKMAN Alpha85
| ✅ Best for | Truck owners, diesel drivers, fleet operators, and anyone who needs serious power with smart diagnostics |
| ❌ Not ideal for | Buyers on a tight budget who only drive a small sedan — the NOCO GB40 handles that job for $100 less |
| 💰 Price | ~$199.99 MSRP (frequently on sale — check for latest price) |
The HULKMAN Alpha85 is a different class of jump starter. It’s not just more powerful — it’s smarter, longer-lasting, and built for situations the NOCO GB40 can’t handle.
Start with the raw numbers: 2,000 amps of peak current from a 74 Wh battery. That’s three times the energy storage of the GB40. It starts gas engines up to 8.5 liters and diesel engines up to 6.0 liters. That means it handles Ford F-250 Super Duty diesel trucks, Chevy Silverado HD engines, diesel vans, and large boats — the GB40 can’t touch those.
The 3.3-inch smart LED display is a genuine differentiator. It shows your battery percentage, operational status in real time, and specific error codes when something’s wrong. It’s the closest thing to a built-in voltmeter on a consumer jump starter. One Amazon buyer described it as “knowing exactly what’s happening instead of guessing.” That’s a fair description.
The 65W Speed Charge input is another huge advantage. The GB40 takes about 3 hours to charge fully. The Alpha85 goes from zero to 100% in about 90 minutes with the included fast charger. And on one full charge, it delivers up to 60 jump starts — three times what the NOCO offers. The 2-year warranty (extendable to 3 with free registration) also beats the GB40’s 1-year coverage.
HULKMAN Alpha85, 2000A 74Wh Smart Jump Starter, 12V Portable Car Battery Booster with 3.3″ Display, USB-C Power Pack, Jumper Cables for up to 8.5L Gas/6.0L Diesel
If you own a truck, diesel vehicle, or need serious jump-starting power that’ll last all day, the Alpha85 is one of the best buys in its class.
Full Spec Comparison: NOCO GB40 vs HULKMAN Alpha85
| Spec | NOCO GB40 | HULKMAN Alpha85 | Winner |
|---|---|---|---|
| Peak Current | 1,000A | 2,000A | HULKMAN |
| Gas Engine Rating | Up to 6.0L | Up to 8.5L | HULKMAN |
| Diesel Engine Rating | Up to 3.0L | Up to 6.0L | HULKMAN |
| Battery Capacity (Wh) | 24 Wh | 74 Wh | HULKMAN |
| Jump Starts Per Charge | Up to 20 | Up to 60 | HULKMAN |
| Weight | 2.45 lbs | ~3.3 lbs | NOCO |
| Charge Time (Standard) | ~3 hours (via USB) | ~90 min (65W charger) | HULKMAN |
| Smart Display / Diagnostics | None | 3.3″ LED screen | HULKMAN |
| Built-in Voltmeter | No | Yes (via display) | HULKMAN |
| LED Flashlight Modes | 7 modes (incl. SOS, strobe) | 5 modes | NOCO |
| IP Rating | IP65 | IP65 | Tie |
| Warranty | 1 year | 2 years (3 with reg.) | HULKMAN |
| Price (USD) | ~$99.95 | ~$199.99 | NOCO |
Raw Power and Engine Coverage: Which One Handles Bigger Engines?
The HULKMAN Alpha85 wins this category — and it’s not close. 2,000 amps versus 1,000 amps is a real-world difference, not just a spec sheet number.
Here’s what that means in practice. The NOCO GB40 handles most everyday vehicles without any trouble. Sedans, crossovers, motorcycles, small trucks, and boats with 6.0L gas engines — it’s fine for all of those. It’s been doing that job reliably for years.
But the moment you step up to a diesel pickup, a large work van, or any engine above 3.0L diesel — the GB40 is out of its depth. It simply can’t do it. The Alpha85, by contrast, handles diesel engines up to 6.0 liters. That covers almost every diesel truck and van on the road today, including the Ford F-350 Power Stroke and Ram 2500 Cummins.
The 74 Wh battery in the Alpha85 also gives it a meaningful advantage in cold weather. Lithium batteries lose capacity as temperatures drop. The GB40’s 24 Wh reserve drains faster in freezing conditions. The Alpha85’s larger bank holds more usable power when you need it most — on a January morning in Minnesota or Montana.
If you drive a standard gas car, the NOCO GB40’s 1,000A is enough. If you own a diesel truck, a large SUV, or anything with an engine above 6.0L gas or 3.0L diesel — only the Hulkman Alpha85 has the range to help you.
Portability and Design: Which One Is Easier to Live With?
The NOCO GB40 wins this round. At 2.45 pounds, it’s one of the lightest jump starters you’ll find at this power level.
It’s small enough to slide into a center console or the side pocket of a laptop bag. The rubber over-molded casing prevents scratches on your car’s interior panels — a detail most buyers don’t notice until they need it. NOCO has been refining this design since 1914, and it shows. Everything feels tight, intentional, and durable.
The Alpha85 is larger and heavier. It’s still compact by jump starter standards — smaller than a trade paperback — but it won’t slide into a standard glovebox as easily. The modern industrial design looks sharp, and the 3.3-inch display makes it feel like a premium tool rather than just a utility device. Multiple color options (Space Gray, Midnight Green, Carmine Red, Cobalt Blue) are a nice touch if aesthetics matter to you.
One area both products share: jumper cable length complaints on Amazon. Some users on both products mention the cables feel short when reaching around larger engine bays. If you have a big truck or SUV with a deeply recessed battery, keep that in mind.
If glovebox storage is your priority, the NOCO GB40 is the clear winner. If the jump starter will live in your trunk or a tool bag, the Alpha85’s extra size and weight won’t bother you at all.
Price and Value: Is the HULKMAN Alpha85 Worth $100 More?
Here’s the honest answer: it depends entirely on your vehicle.
The NOCO GB40 costs $99.95. The HULKMAN Alpha85 lists at $199.99. That’s a $100 difference. But raw price comparison misses the real story — battery capacity tells it better.
The GB40 has 24 Wh. The Alpha85 has 74 Wh. That’s three times the stored energy for roughly twice the price. You’re also getting 60 jump starts versus 20, diesel support up to 6.0L instead of 3.0L, and a smart display instead of basic LED indicators. On a pure specs-per-dollar basis, the Hulkman delivers more.
Think of it this way: the GB40 is a reliable sedan. The Alpha85 is a truck. Both do the job — but only one can handle the heavy lifting. If your vehicle needs the truck, paying extra for a sedan leaves you stranded.
That said, the NOCO GB40 is genuinely great value for what it’s designed to do. If you drive a Toyota Camry, Honda CR-V, or similar everyday vehicle — you don’t need 2,000 amps. The $99.95 GB40 handles that job perfectly and saves you $100. Watch for Hulkman’s frequent Amazon sales, though — the Alpha85 often drops to $99–$149, at which point it’s an almost unfair deal compared to anything in its class.
Safety Features and Smart Tools: Where They’re Different
The HULKMAN Alpha85 wins this category — specifically because of its smart display.
Both jump starters share the same core safety foundation. Spark-proof connections and reverse polarity protection are standard on both. Either one will shut itself off before it lets you fry your car’s electronics from a bad connection. That’s table stakes for any quality jump starter in 2025, and both products deliver it.
But the Hulkman goes further. Its 3.3-inch LED display acts as an onboard diagnostic tool. It shows your unit’s battery percentage before you try to use it. It displays operational status in real time — so you know if the connection is good before you crank the engine. And it shows specific error codes when something isn’t working, rather than making you guess from a blinking light pattern. This is the closest thing to a built-in voltmeter you’ll find on a consumer-grade jump starter.
The NOCO GB40’s LED indicators are simpler: colored lights that tell you charge level and connection status. They work. But if you’re a first-timer in a stressful situation, a clear percentage display is more reassuring than a set of LEDs to decode.
Both the NOCO GB40 and the HULKMAN Alpha85 have a manual override or Boost Start mode for batteries that have dropped below safe voltage (below ~2V on the NOCO). This feature bypasses the unit’s built-in safety protections. Use it only as a last resort, and only if you understand what you’re doing. Misusing manual override repeatedly can damage your vehicle’s battery or the jump starter itself. If you’re unsure, wait for professional help instead of forcing an override.
Cable length is another point worth raising. Multiple Amazon reviewers on both products mention that the jumper cables can feel short in tight or deep engine bays — especially on large trucks and full-size vans. This isn’t a dealbreaker, but it’s a real-world limitation that most VS articles ignore.
For deeper reading on lithium battery safety standards that both products are tested against, UL Solutions’ battery safety testing program is a solid authoritative resource.
Real-World Use Cases: Which Jump Starter Wins?
- Dead battery in a parking lot (sedan or crossover): NOCO GB40 wins. Light, fast to deploy, and 1,000A is plenty for any 4- or 6-cylinder gas engine.
- Dead diesel pickup truck (F-250, Ram 2500, Silverado HD): HULKMAN Alpha85 wins. Only the Alpha85 covers 6.0L diesel. The GB40 tops out at 3.0L and won’t touch these engines.
- Cold winter morning at -10°F: HULKMAN Alpha85 wins. Its 74 Wh battery holds more usable charge in sub-zero conditions. The GB40’s 24 Wh drains faster in deep cold.
- Glovebox storage in a compact car: NOCO GB40 wins. At 2.45 lbs and pocket-sized dimensions, it disappears into any glovebox. The Alpha85 is too large for comfortable glovebox storage.
- Fleet yard or work truck driver starting multiple vehicles per day: HULKMAN Alpha85 wins. Sixty jump starts per charge means you’re not hunting for a power outlet mid-shift. Twenty starts on the GB40 runs out fast in a fleet environment.
- Weekend boater or RV traveler: HULKMAN Alpha85 wins. Larger gas engines in boats and RVs often exceed 6.0L, and the 60 starts per charge gives you a reliable safety net across a whole weekend trip.
Who Should Buy the NOCO GB40?
- You drive a sedan, crossover, minivan, or small SUV with a gas engine up to 6.0L.
- You want a beginner-friendly jump starter with zero learning curve.
- Glovebox storage space is limited and weight matters to you.
- Your budget is around $100 and you don’t need diesel support.
- You’re buying a backup emergency tool and expect to use it rarely.
Who Should Buy the HULKMAN Alpha85?
- You drive a diesel truck, large diesel van, or any diesel engine above 3.0L.
- You need to jump start multiple vehicles regularly — at work, on a job site, or in a fleet.
- You want smart diagnostics: battery level, error codes, and real-time status on a display.
- You live in a cold climate where battery performance in freezing temperatures is a real concern.
- You want a longer warranty and are willing to invest $200 for a more capable tool.
Who Should NOT Buy Either One?
- If you need to start diesel engines above 6.0L regularly (large commercial trucks, heavy equipment), look at the NOCO GB150 (3,000A) or the NOCO GBX155 (4,250A) — those are designed for commercial-grade work.
- If budget is extremely tight and your car is small, the NOCO GB20 (500A, ~$79.95) or HULKMAN Alpha65 (1,200A) will do the job for less.
- If you manage a large commercial fleet with Class 7 or Class 8 trucks, neither product is sized for that — you need a professional-grade booster pack.
How to Maintain Your Jump Starter: Battery Care and Storage Tips
A jump starter you never maintain is a jump starter that won’t work when you need it. Follow these habits and yours will last for years.
Charge your jump starter at least once a month — even if you haven’t used it. Lithium batteries self-discharge slowly over time. Both the NOCO GB40 and the Hulkman Alpha85 lose a small percentage of charge each month in storage. A monthly top-up keeps them ready for emergencies.
Never store either unit in extreme heat. Temperatures above 104°F (40°C) — like a locked car on a summer afternoon — accelerate lithium cell degradation. Store your jump starter in a cool, dry place: a garage shelf, a tool bag indoors, or inside the cabin. Direct sun exposure in a parked car will shorten its lifespan faster than almost anything else.
Don’t let either unit stay deeply discharged for months. If the battery drops below 20% and you leave it there for an extended period, you risk permanent cell damage. After any use, recharge promptly. If you’re putting it away for the winter, charge it fully first.
Do not use the Manual Override (NOCO) or Boost Start mode (Hulkman) as a regular habit. These modes bypass the safety circuits that protect your vehicle’s electrical system. Use them only in genuine emergencies, only on vehicles with lead-acid batteries that have deeply discharged, and only when you understand the risks. Repeated manual override use on a damaged or frozen battery is dangerous and can permanently damage both the jump starter and the vehicle battery.
After jump-starting a large engine — especially a diesel truck or V8 — recharge the unit as soon as possible. Large engines draw more from the battery than small ones. Don’t assume you have plenty of starts left after a big engine restart.
Final Verdict: NOCO GB40 vs HULKMAN Alpha85
The HULKMAN Alpha85 is the overall winner. It’s more powerful, smarter, and handles more situations than the NOCO GB40. If you could only choose one, the Alpha85 is the more capable tool.
But here’s the honest conditional: if you drive a regular car and live on a budget, the NOCO GB40 at $99.95 is all you actually need. It’s compact, safe, proven, and effective for the vast majority of everyday drivers. Don’t overspend for power you won’t use.
Buy the HULKMAN Alpha85 if you own a diesel truck, a large gas engine, or you need serious reserve power for multiple vehicles. Buy the NOCO GB40 if you drive a standard car and want a trusted, lightweight emergency tool. Both are good. Only one is right for your situation — and now you know which.
NOCO Boost GB40: 1000A UltraSafe Jump Starter
Best for everyday car owners who want a compact, beginner-safe, and proven jump starter at a great price.
HULKMAN Alpha85 2000A Smart Jump Starter
Best for truck owners, diesel drivers, and anyone who needs serious power, smart diagnostics, and a long-lasting battery reserve.
Frequently Asked Questions
Which is better — NOCO GB40 or HULKMAN Alpha85?
The HULKMAN Alpha85 wins overall for power, capacity, and smart features. But the NOCO GB40 is the better choice for everyday car owners who don’t need diesel support and want to spend $100 less. It’s not that one is bad — it’s that they’re built for different situations.
What is the difference between the NOCO GB40 and the HULKMAN Alpha85?
The biggest differences are amps (1,000A vs 2,000A), battery capacity (24 Wh vs 74 Wh), diesel engine support (3.0L vs 6.0L), and the presence of a smart display. The Alpha85 also delivers 60 jump starts per charge versus 20 on the GB40, and charges in 90 minutes instead of 3 hours.
Is the HULKMAN Alpha85 worth the extra $100 over the NOCO GB40?
Yes — if you own a diesel truck, large gas engine, or need to jump-start multiple vehicles regularly. No — if you drive a standard sedan or compact SUV with a gas engine under 6.0L. The NOCO GB40 handles everyday vehicles perfectly and costs half the price.
Can the NOCO GB40 jump start a diesel truck?
Only if the diesel engine is 3.0 liters or smaller. Most diesel pickup trucks — Ford F-250, Ram 2500, Chevy Silverado HD — have diesel engines between 5.0L and 6.7L. The GB40 is not rated for those. You’d need the HULKMAN Alpha85 or the NOCO GB70 for those vehicles.
How many times can the HULKMAN Alpha85 jump start before recharging?
HULKMAN rates the Alpha85 for up to 60 jump starts on a single full charge. In real-world testing on small to mid-sized engines, most users report between 30 and 50 starts before needing to recharge — still far more than the NOCO GB40’s rated 20 starts. Larger engines draw more per start, so real-world numbers vary by engine size.
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I’m Alex Rahman, a car enthusiast and automotive writer focused on practical solutions, car tools, and real-world driving advice. I share simple and honest content to help everyday drivers make better decisions.