What size jump starter do I need?

Match the maker's engine rating for your fuel type to your engine's displacement, and step up one size for diesels in cold climates or older batteries.

Lithium or lead-acid jump starter?

NOCO's lithium starters weigh 2.16 to 6 lb, and lithium packs need recharging less often than lead-acid ones. Lead-acid packs such as the Clore JNC660 weigh 18 lb but come with long heavy cables and a built-in wall charger.

Which jump starter is best for a diesel truck?

For diesels up to 7.0 L, the NOCO GB150. For diesels between 7.0 and 10.0 L, the GOOLOO GP4000 is the one rated for them.

Best of · Jump Starters

Best Jump Starters by Engine Size and Use (2026)

Seven jump starters from four makers, matched to engine size and how you will use them, from glovebox starters to a shop booster pack.

By Watt Versus Editorial· Updated October 22, 2026 · 7 picks

This page was drafted with AI assistance from manufacturers' specs and manuals, and is checked by our editor.

The short list

#	Product	Key feature	Pros / Cons	Buy
1	NOCO Boost HD GB70 Jump StarterBest OverallEditorial score:8.5/10	A 2,000-amp lithium jump starter rated for gasoline engines up to 8.0 L and diesel engines up to 6.0 L, with a 12 V output.	Rated for diesel engines up to 6.0 L, which covers many diesel pickups Up to 40 jump starts per charge from a 56 Wh battery Heavier than the GB40: 4 lb against 2.4 lb	View on Amazon (paid link)
2	Fanttik T8 APEX 2000A Jump StarterBest Power Bank FeaturesEditorial score:8.4/10	A 2,000-amp lithium jump starter for gasoline engines up to 8.5 L and diesels up to 6.0 L, with a 74 Wh battery, 65 W USB-C and a 3-inch display.	Rated for gasoline engines up to 8.5 L and diesels up to 6.0 L 74 Wh battery doubles as a 65 W USB-C power bank Fanttik does not publish a weight or a jump-starts-per-charge figure	View on Amazon (paid link)
3	NOCO Boost X GBX45 Jump StarterBest for Cars and CrossoversEditorial score:8.3/10	A 1,250-amp lithium jump starter for gasoline engines up to 6.5 L and diesel engines up to 4.0 L, with 60 W USB-C charging in and out.	Covers gasoline engines up to 6.5 L and diesels up to 4.0 L, a step above the Boost Plus GB40 Recharges in about 0.8 hours from a 60 W USB-C charger, by NOCO's figures No 12 V accessory output, so it cannot run a tire inflator	View on Amazon (paid link)
4	NOCO Boost Pro GB150 Jump StarterBest for Diesel TrucksEditorial score:8.6/10	A 3,000-amp lithium jump starter rated for gasoline engines up to 9.0 L and diesel engines up to 7.0 L, with a built-in voltmeter.	Covers diesel engines up to 7.0 L, enough for most full-size diesel pickups Up to 80 jump starts per charge, by NOCO's figures 6 lb, about two and a half times the weight of the GB40: not a glovebox starter	View on Amazon (paid link)
5	GOOLOO GP4000 4000A Jump StarterBest for Diesels up to 10 LitersEditorial score:8.1/10	A 4,000-amp lithium jump starter rated for 12 V gasoline and diesel engines up to 10.0 L, with an 88.8 Wh battery and 60+ jump starts per charge.	Rated for gasoline and diesel engines up to 10.0 L, higher than any other starter we cover that publishes an engine rating 60+ jump starts per charge, by GOOLOO's figures No water or dust rating; GOOLOO lists IP65 only for its GT4000	View on Amazon (paid link)
6	NOCO Boost Sport GB20 Jump StarterBest for Small CarsEditorial score:7.6/10	A 500-amp, 1.65 lb lithium jump starter for gasoline engines up to 4.0 L, motorcycles, ATVs and lawn equipment.	1.65 lb: fits a glovebox, a motorcycle bag or a mower shed shelf Covers gasoline engines up to 4.0 L, which includes most four-cylinder cars Not rated for diesel engines at all	View on Amazon (paid link)
7	Clore Jump-N-Carry JNC660 Jump StarterBest Shop-Style Booster PackEditorial score:7.7/10	A 1,700-peak-amp, 425-cranking-amp lead-acid booster pack with 46-inch #2 AWG cables and a built-in automatic charger.	Long 46-inch #2 AWG cables reach batteries that short lithium leads cannot Built-in automatic charger plugs straight into a wall outlet 18 lb, against 2.16 to 6 lb for the NOCO lithium starters	View on Amazon (paid link)

We picked these from the makers' own ratings. The most important number is the engine size a starter is rated for, given separately for gasoline and diesel; peak amps are measured differently by each brand. If you live where winters are hard, choose one size up. Our engine-size guide explains the rule.

Water resistance matters if the starter rides in a truck bed or boat: the NOCO models are IP65 with ports closed, the Fanttik is IP65, and GOOLOO lists no rating for the GP4000.

Our picks in detail

Image: NOCO NOCO Boost HD GB70 Jump Starter

NNOCO

1Best Overall8.5/10

NOCO Boost HD GB70 Jump Starter

NOCO · GB70

Covers gasoline engines up to 8.0 L and diesels up to 6.0 L, with IP65 and a 12 V, 15 A output for accessories.

Peak current: 2,000 A
Gas engines: Up to 8.0 L
Diesel engines: Up to 6.0 L
Battery capacity: 56 Wh
Jump starts per charge: Up to 40
USB output: 5 V, 2.1 A, plus a 12 V, 15 A output

Pros

Rated for diesel engines up to 6.0 L, which covers many diesel pickups
Up to 40 jump starts per charge from a 56 Wh battery
12 V, 15 A output for tire pumps and other 12-volt accessories
Brighter 400-lumen flashlight and the same IP65 housing as the GB40

Cons

Heavier than the GB40: 4 lb against 2.4 lb
A 1-year warranty is short for this category
Works with 12-volt lead-acid batteries only

Check Latest Price on Amazon (paid link)Read full review

Image: Fanttik Fanttik T8 APEX 2000A Jump Starter

FFanttik

2Best Power Bank Features8.4/10

Fanttik T8 APEX 2000A Jump Starter

Fanttik · T8 APEX

A 74 Wh battery with 65 W USB-C, rated for gasoline engines up to 8.5 L and diesels up to 6.0 L.

Peak current: 2,000 A
Gas engines: Up to 8.5 L
Diesel engines: Up to 6.0 L
Battery capacity: 74 Wh (20,000 mAh)
USB output: USB-C 65 W in and out; 18 W USB output
Recharge time: Full in 1.5 hours over 65 W USB-C

Pros

Rated for gasoline engines up to 8.5 L and diesels up to 6.0 L
74 Wh battery doubles as a 65 W USB-C power bank
Full recharge in 1.5 hours over 65 W USB-C, by Fanttik's figures
3-inch screen shows battery voltage and remaining charge

Cons

Fanttik does not publish a weight or a jump-starts-per-charge figure
No 12 V accessory output listed
A 1-year warranty is short for this category

Check Latest Price on Amazon (paid link)Read full review

Image: NOCO NOCO Boost X GBX45 Jump Starter

NNOCO

3Best for Cars and Crossovers8.3/10

NOCO Boost X GBX45 Jump Starter

NOCO · GBX45

Covers gasoline engines up to 6.5 L in a 2.16 lb, IP65 body that recharges over USB-C in about 0.8 hours.

Peak current: 1,250 A
Gas engines: Up to 6.5 L
Diesel engines: Up to 4.0 L
Battery capacity: 31 Wh
USB output: USB-A 5 V, 2.1 A (10 W); USB-C up to 20 V, 3 A (60 W)
Recharge time: 0.8 hours at 60 W over USB-C; 4 hours at 10 W

Pros

Covers gasoline engines up to 6.5 L and diesels up to 4.0 L, a step above the Boost Plus GB40
Recharges in about 0.8 hours from a 60 W USB-C charger, by NOCO's figures
USB-C port also charges phones and laptops at up to 60 W
IP65 housing at 2.16 lb

Cons

No 12 V accessory output, so it cannot run a tire inflator
NOCO does not publish a jump-starts-per-charge figure for this model
Works with 12-volt lead-acid batteries only
A 1-year warranty is short for this category

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Image: NOCO NOCO Boost Pro GB150 Jump Starter

NNOCO

4Best for Diesel Trucks8.6/10

NOCO Boost Pro GB150 Jump Starter

NOCO · GB150

Rated for diesels up to 7.0 L with up to 80 jump starts per charge and an IP65 housing.

Peak current: 3,000 A
Gas engines: Up to 9.0 L
Diesel engines: Up to 7.0 L
Battery capacity: 88 Wh
Jump starts per charge: Up to 80
USB output: 5 V, 2.1 A, plus a 12 V, 15 A output

Pros

Covers diesel engines up to 7.0 L, enough for most full-size diesel pickups
Up to 80 jump starts per charge, by NOCO's figures
Built-in voltmeter shows the vehicle battery's voltage
12 V, 15 A output can run 12 V accessories

Cons

6 lb, about two and a half times the weight of the GB40: not a glovebox starter
A full recharge over USB takes about 11 hours
Works with 12-volt lead-acid batteries only

Check Latest Price on Amazon (paid link)Read full review

Image: GOOLOO GOOLOO GP4000 4000A Jump Starter

GGOOLOO

5Best for Diesels up to 10 Liters8.1/10

GOOLOO GP4000 4000A Jump Starter

GOOLOO · GP4000

The only starter we cover rated for gasoline and diesel engines up to 10.0 L, with 60+ starts per charge.

Peak current: 4,000 A
Gas engines: Up to 10.0 L
Diesel engines: Up to 10.0 L
Battery capacity: 88.8 Wh
Jump starts per charge: 60+
USB output: USB-C in and out, plus two USB-A ports (one fast-charging); per-port wattage not listed

Pros

Rated for gasoline and diesel engines up to 10.0 L, higher than any other starter we cover that publishes an engine rating
60+ jump starts per charge, by GOOLOO's figures
Rated to work from -4°F to 140°F
Up to 30 months of warranty

Cons

No water or dust rating; GOOLOO lists IP65 only for its GT4000
Weight and dimensions are not published
Wall charger is not included, and a full recharge takes about 5 hours

Check Latest Price on Amazon (paid link)Read full review

Image: NOCO NOCO Boost Sport GB20 Jump Starter

NNOCO

6Best for Small Cars7.6/10

NOCO Boost Sport GB20 Jump Starter

NOCO · GB20

A compact 500 A starter for gasoline engines up to 4.0 L, motorcycles and lawn equipment.

Peak current: 500 A
Gas engines: Up to 4.0 L
Diesel engines: Not rated for diesel
Battery capacity: 24 Wh
Jump starts per charge: Up to 20
USB output: 5 V, 2.1 A

Pros

1.65 lb: fits a glovebox, a motorcycle bag or a mower shed shelf
Covers gasoline engines up to 4.0 L, which includes most four-cylinder cars
Spark-proof clamps and reverse-polarity protection
Recharges in about 3 hours from a 2 A USB charger

Cons

Not rated for diesel engines at all
500 A leaves little margin for a large engine on a cold morning
Works with 12-volt lead-acid batteries only

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Image: Clore Automotive Clore Jump-N-Carry JNC660 Jump Starter

CClore Automotive

7Best Shop-Style Booster Pack7.7/10

Clore Jump-N-Carry JNC660 Jump Starter

Clore Automotive · JNC660

A lead-acid pack with 46-inch #2 AWG cables and a built-in charger, for garages and fleets.

Peak current: 1,700 A (425 cranking amps)
Battery capacity: Sealed lead-acid; amp-hour rating not listed by Clore
Cables: 46 in, #2 AWG welding cable
USB output: None listed; 12 V DC outlet with automatic overload protection
Recharge time: Built-in automatic AC charger; charge 24 hours before first use
Weight: 18 lb

Pros

Long 46-inch #2 AWG cables reach batteries that short lithium leads cannot
Built-in automatic charger plugs straight into a wall outlet
Voltmeter shows the pack's state of charge
12 V DC outlet with overload protection for accessories

Cons

18 lb, against 2.16 to 6 lb for the NOCO lithium starters
Clore publishes no engine-size rating
Lead-acid pack must be recharged every three months in storage
No USB ports listed

Check Latest Price on Amazon (paid link)Read full review

Frequently asked questions

What size jump starter do I need?: Match the maker's engine rating for your fuel type to your engine's displacement, and step up one size for diesels in cold climates or older batteries.
Lithium or lead-acid jump starter?: NOCO's lithium starters weigh 2.16 to 6 lb, and lithium packs need recharging less often than lead-acid ones. Lead-acid packs such as the Clore JNC660 weigh 18 lb but come with long heavy cables and a built-in wall charger.
Which jump starter is best for a diesel truck?: For diesels up to 7.0 L, the NOCO GB150. For diesels between 7.0 and 10.0 L, the GOOLOO GP4000 is the one rated for them.