Jump Starters
The best heavy duty jump starters
Above a half-ton pickup, the question stops being peak amps and becomes what the maker will commit to in liters — and whether the starting system is even 12 volts.
Disclosure: we earn a commission if you buy through the Amazon links on this page, at no extra cost to you. Commission never decides a verdict or a ranking position — read our editorial policy and affiliate disclosure.
How we assessed these: picks are selected from manufacturers' published specifications, stated engine ratings and current retailer listings — not from hands-on cranking tests of every unit. We publish no measured cranking currents or start counts, because we do not measure them.
Short answer
For a diesel pickup or a big V8, buy the NOCO Boost HD GB70: NOCO publishes a 6.0-liter diesel rating and 56 watt-hours, which is the smallest pack with genuine margin on a cold diesel. For farm and construction equipment, the Boost Pro GB150 goes to a published 7.0 liters of diesel with 88 watt-hours and longer cables. If your truck is 24 volts, none of those work and the Boost MAX GB251 is the only pack here that does. The budget pick is the DEWALT DXAEJ14 — a lead-acid station rated for 8-cylinder engines that costs less than the lithium packs and does not mind living in a hot shop.
Quick picks
Tap any row to jump to the full write-up. Scoring criteria are published in full on our methodology page.
| # | Product | Best for | Our read | Price |
|---|---|---|---|---|
| 1 |  NOCO Boost HD GB70 Best overall | Diesel pickups and big V8s | 6.0 L diesel rating and 56 Wh in a pack you can still carry | $199.95View on Amazon #ad Affiliate link · Price as of November 10, 2026 |
| 2 |  NOCO Boost Pro GB150 Best for equipment and fleet work | Heavy diesel, fleet and equipment | 3,000 A, 7.0 L diesel, 88 Wh, long heavy-gauge cables | $299.95View on Amazon #ad Affiliate link · Price as of November 10, 2026 |
| 3 |  NOCO Boost MAX GB251 Best for 24-volt systems | Semi trucks and 24-volt systems | The only 24 V pack here — rated to 32 L, 137 Wh | $1,199.95View on Amazon #ad Affiliate link · Price as of November 10, 2026 |
| 4 |  DEWALT DXAEJ14 Power Station Budget pick | One box that jumps and inflates | 1,600 A lead-acid station rated for 8-cylinder engines | $129.00$169.00View on Amazon #ad Affiliate link · Price as of November 10, 2026 |
"Heavy duty" is the least useful phrase in this category, because every listing uses it. What actually separates a heavy-duty pack from a car pack is three specific things: a published diesel rating rather than only a gas one, enough reserve capacity for repeated attempts on an engine that does not catch first time, and cables long and thick enough to reach a battery that may be under a seat, behind a panel or on the far side of a frame rail.
That last point gets overlooked and then becomes the whole problem in a parking lot. A pack with short cables cannot reach a battery mounted on the opposite side of an engine bay, and a pack that cannot reach is a pack that does not work.
Start with the system voltage, not the amps
Before any specification matters, answer one question: is the starting system 12 volts or 24 volts? Light and medium trucks, pickups and almost all farm pickups are 12 volts. Class 8 trucks and a lot of heavy equipment run 24 volts, usually as two 12-volt batteries in series. A 12-volt pack on a 24-volt system is not a smaller tool, it is the wrong tool, and a 24-volt pack on a 12-volt truck is worse.
The NOCO Boost MAX GB251 is the only pack in this registry built for 24 volts, which is exactly why it appears here and why it is the only candidate if that is your answer. Best jump starter for semi trucks goes deeper into the Class 8 case, including why a pack rated to 32 liters is not an exaggeration on an engine that size.
| Pack | System | Peak amps | Capacity | Diesel rating | Weight |
|---|---|---|---|---|---|
| DEWALT DXAEJ14 | 12 V | 1,600 A | Not published | Rated for 4-, 6- and 8-cylinder engines | Not published |
| NOCO Boost HD GB70 | 12 V | 2,000 A | 56 Wh | Up to 6.0 L | 4.18 lb |
| NOCO Boost Pro GB150 | 12 V | 3,000 A | 88 Wh | Up to 7.0 L | 6.39 lb |
| NOCO Boost MAX GB251 | 24 V | 3,000 A | 137 Wh | Up to 32 L | 14.7 lb |
NOCO figures are from its own published specification pages. DEWALT's licensee publishes an engine-cylinder rating rather than a displacement figure, and publishes no weight or battery capacity for the DXAEJ14, so those cells say so rather than carrying an estimate.
Reserve capacity is what a cold diesel actually consumes
A gas four-cylinder usually catches on the first crank or does not need a jump at all. A cold diesel is a different problem: higher compression, thicker oil, glow plugs or grid heaters drawing current before the starter even turns, and often two batteries that are both tired. The realistic scenario is three or four attempts with a wait between them, not one.
That is what the watt-hour figure buys. The GB70's 56 watt-hours against the GB40's 24 is not a marginal upgrade for a diesel owner — it is the difference between a pack that is still trying on attempt four and one that is not. Best jump starter for diesel trucks works through the sizing by engine, and will a jump starter start a dead battery covers the case where the answer is no regardless of pack size.
Lead-acid still has a case in a work vehicle
Our budget pick is deliberately not lithium. A lead-acid station like the DEWALT DXAEJ14 is heavier and bulkier, and it self-discharges, so it needs topping up on a schedule. In exchange it is cheaper for the starting ability, it is untroubled by a hot truck bed in July, and in the DXAEJ14's case it brings a 120 PSI compressor and an alternator check in the same case.
For a work truck that already carries a toolbox, those trade-offs land differently than they do for a commuter. The weight you are avoiding with lithium is weight that vehicle was carrying anyway.
The picks
1. Best overall
NOCO Boost HD GB70
NOCO · Best for diesel pickups and big v8s
The one to buy if you drive a diesel: 2,000 peak amps, a 6.0-liter diesel rating and 56 watt-hours, which is the smallest pack with real margin on a cold diesel.
Published specifications
What works
- The 6.0 L diesel rating covers the common 3.0 L and 6.7 L light-truck diesels with margin
- 56 Wh is still comfortably under the 100 Wh carry-on threshold, so it flies as hand luggage
- 12 V 15 A accessory output, and a 400-lumen light that is genuinely usable roadside
- 12 V / 3 A fast charge brings it back in about three hours
What does not
- 4.18 lb — noticeably heavier than the compact packs, and it wants a dedicated spot
- Overkill for a commuter four-cylinder; you are paying for headroom you will not use
Skip it if
Not the one to buy if you only ever start a four-cylinder commuter. Buy diesel headroom when you have a diesel.
#ad Affiliate link · Price as of November 10, 2026
Raw specifications: NOCO’s own page for the NOCO Boost HD GB70.
2. Best for equipment and fleet work
NOCO Boost Pro GB150
NOCO · Best for heavy diesel, fleet and equipment
The heavy end: 3,000 peak amps, a 7.0-liter diesel rating and 88 watt-hours, for the engines the consumer packs cannot legitimately claim.
Published specifications
What works
- The 7.0 L diesel rating is the highest in NOCO's consumer line
- 88 Wh still sits under the 100 Wh carry-on threshold, which is unusual at this size
- Long, heavy-gauge cables reach awkward battery positions on trucks and equipment
What does not
- 6.39 lb and bulky — a dedicated trunk or toolbox item, not a glovebox one
- Far more capacity than any passenger car will ever draw
Skip it if
Wrong tool for a car or crossover. If your largest engine is a half-ton gas V8, the GB70 already has margin and costs and weighs less.
#ad Affiliate link · Price as of November 10, 2026
Raw specifications: NOCO’s own page for the NOCO Boost Pro GB150.
3. Best for 24-volt systems
NOCO Boost MAX GB251
NOCO · Best for semi trucks and 24-volt systems
The only pack here built for a 24-volt starting system: 3,000 peak amps and 137 watt-hours, rated by NOCO as safe on all engine sizes up to 32 liters. It is also the one that needs airline permission.
Published specifications
- System voltage
- 24 V source
- Peak amps
- 3,000 A source
- Internal battery
- 137 Wh lithium-ion source
- Battery types
- 24 V lead-acid battery systems source
- Gas engine rating
- Up to 32 liters source
- Diesel engine rating
- Up to 32 liters — safe on all engine sizes source
- Weight
- 14.7 lb (6.67 kg) source
- Accessory output
- 12 V, 15 A (XGC) source
- Flashlight
- 600 lumens source
- Water resistance
- IP65 with ports closed source
- Warranty
- 1-year hassle-free source
What works
- Built for 24 V systems, which is what actually disqualifies most packs from Class 8 work
- NOCO rates it safe on all engine sizes up to 32 liters — no guessing at the ceiling
- 137 Wh is a genuine reserve for repeated attempts on a cold fleet vehicle
- 12 V 15 A accessory output will run an inflator directly
What does not
- 14.7 lb, and the size that goes with it — this is a toolbox item, not a glovebox one
- 24 V only, so it is no use at all on a 12-volt truck
- 137 Wh is over the 100 Wh carry-on threshold, so flying with it needs airline approval
- Enormous overkill, and priced accordingly, for any passenger vehicle
Skip it if
Not for a car, a pickup or an RV with a 12 V system — on a 12-volt start a 24-volt pack is the wrong tool, not a bigger one. If nothing you own runs 24 volts, buy the pack that matches your engine rating instead.
#ad Affiliate link · Price as of November 10, 2026
Raw specifications: NOCO’s own page for the NOCO Boost MAX GB251.
4. Budget pick
DEWALT DXAEJ14 Power Station
DEWALT · Best for one box that jumps and inflates
A lead-acid jump station with a built-in 120 PSI digital compressor and USB-A plus USB-C power — the combo box for people who would rather carry one heavy thing than two light ones.
Published specifications
- Jump starting
- 1,600 peak amps, rated to start most 4-, 6- and 8-cylinder engines source
- Air compressor
- 120 PSI digital, with AUTOSTOP source
- USB output
- USB-A 15 W and USB-C 25 W source
- Battery types
- 12 V lead-acid: wet, gel and AGM source
- Diagnostics
- Alternator Check, plus reverse-polarity protection source
- In the box
- Clamps and cables, sports needle adapter source
What works
- Jump starter, 120 PSI compressor and USB-A/USB-C power in a single case
- 1,600 peak amps is rated for 4-, 6- and 8-cylinder engines
- Lead-acid chemistry is untroubled by living in a hot trunk
- Alternator Check tells you whether the jump was the problem or the symptom
What does not
- Heavy and bulky next to any lithium pack — the usual reason combo boxes end up in the garage
- Lead-acid self-discharges, so it needs topping up on a schedule or it is flat when you need it
- The built-in compressor is a convenience feature, not a match for a dedicated inflator's duty cycle
- DEWALT's licensee publishes no weight, cable gauge, battery capacity or compressor duty cycle for this unit
Skip it if
Not for anyone whose priority is packed size or carry-on travel. If the tool has to fit a door pocket or a suitcase, buy a lithium pack and a separate inflator.
#ad Affiliate link · Price as of November 10, 2026
Key takeaways
- Answer the 12-volt or 24-volt question before you compare anything else; it eliminates most of the market either way.
- A published diesel rating in liters is the specification that separates a heavy-duty pack from a car pack.
- Reserve capacity, not peak amps, is what a cold diesel consumes across repeated attempts.
- Cable length and gauge decide whether the pack reaches a battery that is not in the obvious place.
- Lead-acid is still a reasonable buy in a work vehicle: cheaper per amp and indifferent to heat, at a weight penalty that truck was carrying anyway.
- Two batteries in parallel is still a 12-volt system — check before buying a 24-volt pack.
How we sourced this
Every figure on this page came from one of the following. Where a manufacturer or regulator does not publish a number, we say so rather than estimate it.
Common questions
- What size jump starter do I need for a diesel truck?
- Match the published diesel rating to your engine with margin. A 6.7-liter light-truck diesel wants a pack rated to 6.0 liters or above, which in this range means the GB70 at minimum and the GB150 if you want headroom on a cold morning.
- Will a 12-volt jump starter work on a 24-volt truck?
- No. A 24-volt starting system needs a 24-volt pack; a 12-volt pack is the wrong tool rather than an undersized one. Check the system voltage before you shop.
- Are peak amps the right way to compare heavy duty jump starters?
- Only loosely. Peak amps are quoted under measurement conditions that are rarely stated, while a published engine rating in liters is the manufacturer committing to a ceiling. Compare ratings and watt-hours first.
- Can a heavy duty jump starter fly with me?
- The GB70 at 56 Wh and the GB150 at 88 Wh are both under the FAA's 100 watt-hour carry-on threshold. The 137 Wh Boost MAX is over it and needs airline approval.
- Is a lead-acid jump box better for a work truck?
- It is a defensible choice. It tolerates heat better, costs less per peak amp, and often includes a compressor. The costs are weight, bulk and the need to keep it topped up, since lead-acid self-discharges faster.
More in Jump Starters
A jump pack is the one trunk tool that turns a tow truck into a five-minute inconvenience. This is how to size one, and which ones are worth the space.
Read next
Best for Diesel Trucks
For Diesel Trucks
Packs with a published diesel rating that actually covers a 3.0 L to 6.7 L light-truck engine, with margin for a cold morning.
Best for Semi Trucks
Best for Semi Trucks
Why 24-volt capability, not peak amps, decides this category — and the short list of packs that actually have it.
Guide
What Size Do I Need?
The sizing table by engine displacement and fuel type, using ratings manufacturers publish and warrant rather than peak-amp marketing.
Best for a V8 engine
Best for a V8
NOCO's published gas and diesel liter ratings read against the V8 displacements actually on the road, plus the sizing rule that keeps you from buying one rung short.
Found something out of date, or a figure you can source better than we did? Tell us — corrections get read first. Our methodology explains how picks are made, and contact is one click away.