NOCO vs GOOLOO Jump Starters: Specs Compared

Last updated October 28, 2026 · Researched and edited by Chad Norris

NOCO vs GOOLOO comes down to which lineup has a pack that matches your engine for your fuel at the size and weight you want. On the published specs, NOCO’s Boost GB40 and GB50 are the lighter choice for gas cars and V8s, while GOOLOO’s GP4000 offers the widest diesel rating in either lineup (10.0L) and both GP-series packs carry a longer listed warranty. This is a spec-based comparison built from the current Amazon listings and NOCO’s user guide, read on 2026-10-28, not a hands-on test.

Disclosure: As an Amazon Associate I earn from qualifying purchases. VACASSO and WOLFBOX, featured below, pay a bonus commission through Amazon Creator Connections; NOCO and GOOLOO do not. See /disclosure/.

The short answer by vehicle

Ratings per the Amazon listings checked 2026-10-28.

Lineups side by side

Check the current price on Amazon; ratings on the box you receive govern.

Two observations. First, at 3000A the brands agree: NOCO’s GB150 and GOOLOO’s GP3000 carry the identical 9.0L gas / 7.0L diesel rating, so the choice there is about size, features and warranty. Second, at the top GOOLOO’s GP4000 jumps to 10.0L diesel, three liters more than the GB150. If you own a heavy-duty diesel in a cold state, that is the difference that matters. The diesel truck guide goes further.

Where NOCO leads

Small, light packs at the low end. The GB40 is 2.5 lb with a 6.0L gas rating, and the GB50 adds a liter of gas rating and 1.5 liters of diesel rating for only 0.2 lb more. For a glove box or a motorcycle saddlebag, those two are hard to beat on published size-to-rating.

IP65 across the Boost line. The listings for the GB40, GB50, GB70 and GB150 all state IP65, meaning dust-tight and protected against water jets, useful for a pack that lives in a truck.

A clear manual. NOCO’s GB40 user guide spells out the procedure: positive clamp first, up to 30 seconds connected, rest between attempts and no more than five attempts in 15 minutes before a longer rest. It also explains its Manual Override for batteries below 2 volts, and warns that override disables the spark-proof and reverse-polarity protection.

A 24V option. NOCO’s Boost Max GB500 is listed on NOCO’s GB500 page as a 12V and 24V pack with a 266Wh battery, aimed at commercial trucks and equipment. GOOLOO has no 24V model in this comparison.

Where GOOLOO leads

Diesel headroom at the top. The GP4000’s 10.0L diesel rating is the widest of either brand’s mainstream packs.

Warranty. The GP3000, GP4000 and A3 listings each state 18 months; the NOCO Boost listings read state 1 year.

Extras on the bigger packs. The GP4000 adds a 15V DC output that can run a 12V accessory such as a plug-in tire inflator. The A3 builds in a 150 PSI compressor. Both listings give a BOOST button for very low battery voltage.

Stated temperature ranges. The GP3000 and GP4000 list -4°F to 140°F operation; the A3 lists a 14°F to 113°F charging range. NOCO’s listings read did not give a range (retailer data for the GB40 gives about -22°F to 122°F operating, 32°F to 104°F charging). Cold-weather limits are covered in jump starters in cold weather.

Caveat: the GP4000 listing says no wall charger is included, so budget for a USB charger if you do not have one.

Features compared

Recharging and storage

A jump starter only helps if it is charged when you need it, so the recharge story matters as much as the amp rating.

Recharge intervals. GOOLOO’s listings are specific: the GP3000 says to recharge every 90 days, and the GP4000 every 2 to 3 months if it sits unused. The NOCO listings we read do not give an interval, so follow the manual that ships with your unit; a quarterly top-up is a sensible default for any lithium pack. How long does a jump starter hold a charge covers self-discharge in more detail.

Recharge time. NOCO lists recharge times that grow with pack size: about 3 hours for the GB40, 5 for the GB50, 6 for the GB70 and 7 for the GB150, per the listings. The GOOLOO GP4000 listing gives a 5 to 9 hour full charge depending on the charger. Either way, this is an overnight job, not something to start in a parking lot.

Charging in the cold. Lithium cells should not be charged below freezing. Retailer data for the GB40 gives a 32°F to 104°F charging window, and the GOOLOO A3 listing gives 14°F to 113°F. Bring the pack inside to charge in winter.

Common points of confusion

“The GOOLOO has more amps, so it must be stronger.” Not necessarily. At 3000A the two brands give identical engine ratings, so the amp figure tells you nothing extra. Where GOOLOO’s ratings pull ahead, it is the published diesel rating that shows it, not the amp figure. The terms are explained in peak amps vs cranking amps.

“Boost and Manual Override are the same thing.” They do a similar job, getting power to a battery too flat for the pack to detect, but the thresholds differ. NOCO’s user guide puts its override below 2 volts and says it disables the safety protections; GOOLOO describes its BOOST button for batteries under about 9 volts. Read the specific manual before you press either.

“A bigger pack is always the safer buy.” A bigger pack is heavier and takes longer to recharge. If a 7.5 lb GB150 ends up living in the garage because it is a nuisance in the car, a 2.5 lb GB40 in the glove box is the better choice for a four-cylinder.

Safety and certification

Both brands describe spark-proof and reverse-polarity protection. Neither set of listings we read names a certification to UL 2743, the UL Solutions standard for portable power packs that covers the jump-start function. If certification matters to you, look for the UL mark on the unit or ask the seller. Before buying any lithium pack, search the brand at cpsc.gov and register the product. Lithium jump starter safety covers storage and heat.

Third options worth comparing

If neither lineup has the rating you want at the size you want, two other brands are worth a look on published specs.

Which should you buy?

1. Find your engine displacement and fuel. What size jump starter do I need shows where to look.
2. Pick the smallest model in either lineup whose rating for your fuel covers the engine, then step up a size for cold climates.
3. Break ties on what you will use: weight and IP rating (NOCO), warranty length and diesel headroom (GOOLOO), or a built-in compressor (GOOLOO A3, or see jump starter with air compressor).

Bottom line

• Gas cars and V8s, lightest pack: NOCO Boost GB40 or GB50.
• Diesels to 7L: a tie on paper between NOCO GB150 and GOOLOO GP3000.
• 6.6L to 6.7L diesels in cold climates: GOOLOO GP4000.
• 24V trucks: NOCO GB500 class.
• Compressor included: GOOLOO A3.

Check the current price on Amazon and the rating on the box before you rely on any pack.