Diesel engines
The Best Portable Jump Starters for Diesel (2027)
Jump starters with enough cranking power for diesel engines in 2027: peak amps and diesel ratings compared.
The short answer
Diesels need more cranking power than gas engines. The NOCO Boost HD GB70 (2000 peak amps, 6.0L diesel rating) is the safest bet, while the Clore JNC660 offers the best sustained cranking for stubborn cold starts.
Our top picks at a glance
- NOCO Boost HD GB702000 amps for trucks and diesels.Best for diesel
- Hulkman Alpha852000 amps with a driver-friendly display.Best diesel value
- Clore Automotive Jump-N-Carry JNC660The shop-grade lead-acid workhorse.Best sustained cranking
- Gooloo GT4000S4000 amps for the biggest gas and diesel engines.Best max cranking power
- AstroAI S8 Ultra3500 amps with smart-cable protection.Best value high-amp
- NOCO Boost X GBX451250 amps of NOCO power in a compact case.Best compact power
- NOCO Boost Plus GB40The benchmark 1000-amp jump starter.Best overall
- TYPE S Dynamic D101000A with an LCD JumpGuide display and a UL listing.Guided display for small diesels
- NOCO Boost Pro GB150A 3000-amp lithium booster rated for big gas engines and mid-size diesels.3000A headroom for mid-size diesels
What owners report
Synthesized from recurring themes in long-term owner feedback.
Most praised
- Sustained cranking stamina matters more than a single burst for engines that need glow plug cycles
- Owners value a diesel specific limit printed clearly, rather than guessing from a gas figure
Common complaints
- Small packs rated only for little diesels get bought for full size trucks by mistake
- Repeated long cranks drain a lithium pack faster than diesel owners expect
The picks, ranked
Every product in this lineup was picked for this use case, ranked with our strongest choices first. If a product from the wider category does not genuinely fit this scenario, it is not listed here.
| # | Product | Award | Peak current | Gas engines | Diesel engines | Battery capacity | Safety |
|---|---|---|---|---|---|---|---|
| 1 | NOCO Boost HD GB70 | Best for diesel | 2000 amps | Up to 8.0L | Up to 6.0L | 56 watt-hours | Spark-proof, reverse-polarity protection |
| 2 | Hulkman Alpha85 | Best diesel value | 2000 amps | Up to 8.5L | Up to 6.0L | - | - |
| 3 | Clore Automotive Jump-N-Carry JNC660 | Best sustained cranking | 1700 amps | - | - | - | - |
| 4 | Gooloo GT4000S | Best max cranking power | 4000 amps | - | - | - | 10-protection smart cables |
| 5 | AstroAI S8 Ultra | Best value high-amp | 3500 amps | - | - | - | 8-protection smart cables |
| 6 | NOCO Boost X GBX45 | Best compact power | 1250 amps | - | - | - | Spark-proof, reverse-polarity protected |
| 7 | NOCO Boost Plus GB40 | Best overall | 1000 amps | Up to 6.0L | Up to 3.0L | - | Spark-proof, reverse-polarity protection |
| 8 | TYPE S Dynamic D10 | Guided display for small diesels | 1000 amps | - | - | - | - |
| 9 | NOCO Boost Pro GB150 | 3000A headroom for mid-size diesels | 3000A | Up to 9.0L | Up to 7.0L | - | - |
Best for diesel
NOCO Boost HD GB70
2000 amps for trucks and diesels.
2000 peak amps and a 6.0L diesel rating cover most consumer diesel trucks and SUVs, with the safety system NOCO is known for.
Strengths
- 2000 peak amps handle gas engines up to 8.0L and diesels up to 6.0L
- Same spark-proof safety system as the GB40
- 56 watt-hours of capacity runs accessories longer
- Rugged housing built for shop and trunk abuse
Limitations
- Heavier and bulkier than compact models
- Overkill for a 4-cylinder commuter car
- Premium price
| Peak current | 2000 amps |
|---|---|
| Gas engines | Up to 8.0L |
| Diesel engines | Up to 6.0L |
| Battery capacity | 56 watt-hours |
| Safety | Spark-proof, reverse-polarity protection |
Best for: Truck, SUV, and diesel owners who need serious cranking power.
Skip if: You drive a small car and want the lightest unit possible.
Best diesel value
Hulkman Alpha85
2000 amps with a driver-friendly display.
Same 2000 peak amps and 6.0L diesel rating, plus 65W fast charging and IP65 sealing for work-truck conditions.
Strengths
- 2000 peak amps for gas engines up to 8.5L and diesels up to 6.0L
- Smart display shows battery level and status clearly
- 65W two-way fast charging for laptops and phones
- IP65-rated housing resists dust and water
Limitations
- Larger than compact 1000-amp units
- Newer brand with a shorter track record than NOCO
- Premium price
| Peak current | 2000 amps |
|---|---|
| Gas engines | Up to 8.5L |
| Diesel engines | Up to 6.0L |
| USB charging | 65W two-way fast charge |
| Ingress rating | IP65 |
Best for: Drivers who want big power plus clear status readouts and fast device charging.
Skip if: You want the longest-established brand name in the category.
Best sustained cranking
Clore Automotive Jump-N-Carry JNC660
The shop-grade lead-acid workhorse.
Diesels need long cranks. The JNC660's 22Ah lead-acid battery delivers 1700 peak amps with the stamina for repeated attempts.
Strengths
- 1700 peak amps from a 22Ah sealed lead-acid battery
- Sustained cranking power for repeated start attempts
- Heavy-duty clamps and cables built for shop use
- Decades-long reputation with professional mechanics
Limitations
- Much heavier than lithium models
- Lead-acid needs regular recharge maintenance
- No USB device charging
| Peak current | 1700 amps |
|---|---|
| Battery | 12V 22Ah sealed lead-acid |
| Cranking amps | 425 |
| Clamps | Heavy-duty industrial grade |
| Use case | Shop, fleet, and home garage |
Best for: Garages, fleets, and anyone who wants old-school cranking stamina.
Skip if: You want pocketable lithium portability or USB charging.
Best max cranking power
Gooloo GT4000S
4000 amps for the biggest gas and diesel engines.
The GT4000S carries the highest diesel ceiling in this catalog, rated for diesels up to 8.0L, with ten-protection smart cables. Owners of the biggest diesel trucks should start here.
Strengths
- 4000A peak current handles up to 10.0L gas and 8.0L diesel
- Smart jumper cables with 10 safety protections
- 100-lumen LED with strobe and SOS modes
- USB quick-charge output for devices
Limitations
- Larger and heavier than compact starters
- Overkill for small cars
- Display is basic
| Peak current | 4000 amps |
|---|---|
| Engine rating | Up to 10.0L gas, 8.0L diesel |
| Safety | 10-protection smart cables |
| Light | 100-lumen LED with SOS |
| USB output | Quick-charge USB ports |
Best for: Truck and large SUV owners, including big diesels.
Skip if: You drive a small car and want the lightest pack.
Best value high-amp
AstroAI S8 Ultra
3500 amps with smart-cable protection.
3500A of peak current with a 6.0L diesel rating and eight-protection smart cables gives diesel owners flagship class coverage without flagship pricing.
Strengths
- 3500A peak current for up to 8.0L gas and 6.0L diesel
- Smart cables with 8 safety protections
- Bright LED with steady, strobe, and SOS modes
- Doubles as a power bank for devices
Limitations
- Bulkier than compact lithium models
- No digital percentage display on the base trim
- Brand support is thinner than NOCO or Clore
| Peak current | 3500 amps |
|---|---|
| Engine rating | Up to 8.0L gas, 6.0L diesel |
| Safety | 8-protection smart cables |
| Light | LED with steady, strobe, and SOS |
| USB output | Device charging ports |
Best for: Drivers who want high peak amps without the premium price.
Skip if: You need the absolute smallest pack.
Best compact power
NOCO Boost X GBX45
1250 amps of NOCO power in a compact case.
The GBX45 is rated for diesels up to 4.0L, which covers diesel cars and smaller diesel SUVs, in a glovebox size pack with NOCO UltraSafe protection and fast USB-C charging.
Strengths
- 1250A peak current starts gas engines up to 6.5L
- 60W USB-C charges phones and laptops fast
- UltraSafe spark-proof and reverse-polarity protection
- Compact enough to live in a glovebox
Limitations
- Lower peak amps than the GB70
- Premium price for the size
- No built-in air compressor
| Peak current | 1250 amps |
|---|---|
| Engine rating | Up to 6.5L gas, 4.0L diesel |
| USB output | 60W USB-C Power Delivery |
| Safety | Spark-proof, reverse-polarity protected |
| Rating | IP65 water and dust resistant |
Best for: Drivers who want NOCO reliability in a smaller, lighter pack.
Skip if: You need to start large diesel trucks regularly.
Best overall
NOCO Boost Plus GB40
The benchmark 1000-amp jump starter.
Small diesels up to 3.0L sit inside the GB40 rating, and its spark-proof safety system makes it the sensible diesel pick for cars and compact diesel SUVs.
Strengths
- 1000 peak amps start gas engines up to 6.0L and diesels up to 3.0L
- Spark-proof connections and reverse-polarity protection
- Doubles as a USB power bank for phones
- Rated to operate down to minus 22 degrees Fahrenheit
Limitations
- Not enough for big diesel trucks
- Single USB output is slow by modern fast-charge standards
- Premium price versus generic 1000-amp units
| Peak current | 1000 amps |
|---|---|
| Gas engines | Up to 6.0L |
| Diesel engines | Up to 3.0L |
| Safety | Spark-proof, reverse-polarity protection |
| Low-temp rating | Minus 22 F |
Best for: Most drivers with gas engines up to 6.0L who want the proven safe pick.
Skip if: You drive a large diesel or want the absolute highest peak amps.
Guided display for small diesels
TYPE S Dynamic D10
1000A with an LCD JumpGuide display and a UL listing.
With a 3.0L diesel rating and an LCD JumpGuide that walks through each step on screen, the D10 suits families running a small diesel who want guidance during the jump.
Strengths
- 1000A peak current starts gas engines up to 6.0L and diesels up to 3.0L, per the Amazon listing
- LCD JumpGuide display walks through the jump step by step
- UL listed with spark-proof clamps and reverse-polarity protection
- 8000mAh power bank with USB-C and USB-A outputs
Limitations
- 1000A class output, not a big-truck or large-diesel unit
- IP64 splash-proof sealing is lighter than IP65 rivals
- Availability runs through marketplace listings, so check the seller at checkout
| Peak current | 1000 amps |
|---|---|
| Engine rating | Up to 6.0L gas, 3.0L diesel |
| Capacity | 8000mAh lithium-ion |
| Display | LCD JumpGuide |
| Rating | IP64 splash-proof, UL listed |
Best for: New drivers and families who want step-by-step guidance on the display while they jump a car.
Skip if: You need to start large diesels; its diesel rating tops out at 3.0L.
3000A headroom for mid-size diesels
NOCO Boost Pro GB150
A 3000-amp lithium booster rated for big gas engines and mid-size diesels.
With a published diesel rating up to 7.0 liters, the GB150 covers the mid-size truck diesels that sit beyond compact booster ratings, and its 3000 peak amps leave margin for the high cranking loads diesel compression demands.
Strengths
- 3000 peak amps start gas engines up to 9.0 liters and diesels up to 7.0 liters
- Spark-proof connections and reverse polarity protection make a wrong hookup a non-event
- 500-lumen LED flashlight handles night breakdowns without a second tool
- Doubles as a USB power bank for phones and tablets on the road
Limitations
- Noticeably larger and heavier than compact commuter boosters
- Premium price tier compared with the rest of the NOCO Boost line
- More output than a small four-cylinder car will ever use
| Peak current | 3000A |
|---|---|
| Gas engines | Up to 9.0L |
| Diesel engines | Up to 7.0L |
| Flashlight | 500-lumen LED |
| Protection | Spark-proof, reverse polarity |
Sources: Amazon listing, CamelCamelCamel, NOCO product documentation
Best for: Truck, SUV, and diesel owners who want one booster with serious headroom for cold starts.
Skip if: You only drive a small commuter car; a compact booster covers that job at a fraction of the size.
Questions, answered
Why do diesels need bigger jump starters?
Diesels use glow plugs and higher compression, which demand longer, harder cranking. A unit rated for 6.0L diesel delivers far more sustained current than a 1000-amp gas-focused pack.
Can I use a 1000-amp starter on a diesel?
Only on small diesels within its rating, like the GB40's 3.0L diesel limit. For full-size diesel trucks, use a 2000-amp class unit.
Does cold weather affect jump starters?
Yes. Batteries deliver less current when cold, which is why winter diesel owners should buy above their minimum rating and store the unit where it stays warmer.
How many start attempts will I get?
Lead-acid shop units like the JNC660 give the most repeated attempts. Lithium packs give fewer but are far more portable. Follow the unit's duty-cycle guidance between attempts.
Should I warm the pack up before a cold diesel start?
If you can, yes. A lithium pack kept in the cab or brought out from indoors delivers noticeably stronger cranking than one pulled from a frozen bed box, because cold cells cannot release current as freely. Connect the clamps, let the glow plugs complete their cycle, and crank in controlled attempts with pauses between them rather than one long grind, which heats the cables and drains the pack without giving the engine a better chance.