GOOLOO GP4000 4000A 12V Jump Starter vs NOCO Boost GB40 1000A 12V Lithium Jump Starter
These are side-by-side facts taken from each product guide: published specifications, strengths and caveats as their sources state them. This page is not a test, a ranking or a verdict about which model is better.
GOOLOO GP4000 4000A 12V Jump Starter
Larger gas and diesel engines, plus 12V accessory power
The GP4000 is a 4000-amp pack that GOOLOO rates for all gas engines and diesels up to 10 litres, with a 150-watt 12V output and a cigarette-lighter adapter. Its manual limits you to three consecutive starts two minutes apart and asks for a 30-minute cool-down before recharging.
Published specifications
- Manual: GP4000 (Epower-137B), 4000 A peak, 800 A starting current
- Manual: capacity given as 74Wh/5000mAh on GOOLOO's site, 99.2Wh on the listing copy
- Manual: max 3 consecutive starts, 2 minutes apart; cool 30 min before recharging
- Manual: full charge 6-8 hours at 5V/3A; wall charger not included
- Manual: operate -20°C to 60°C; charge only at -10°C to 45°C; recharge every 3 months
- Manual: 18-month warranty, original purchaser with receipt or order ID
Strengths
- Smart cable reads out connection, reverse polarity and low voltage on one light
- 15V/10A DC output and a cigarette-lighter adapter for running 12V accessories
- GOOLOO publishes a full text manual, a troubleshooting guide and clear usage limits
Caveats
- Three published battery capacities for one model: 74Wh, 99.2Wh and 24000 mAh
- Only three consecutive starts, and no recharging for 30 minutes afterwards
- The manual lists yachts as supported and then forbids use on boats
NOCO Boost GB40 1000A 12V Lithium Jump Starter
Gas engines to 6.0L and diesels to 3.0L on 12V lead-acid
NOCO rates the GB40 at 1000 peak amps for gas engines up to 6.0 litres and diesels up to 3.0 litres, on a 24 Wh lithium pack. It is spark-proof and reverse-polarity protected in normal use — but the manual override that starts a battery below 2 volts switches both of those off.
Published specifications
- NOCO: 1000 A peak; gas up to 6.0 L, diesel up to 3.0 L; 12V lead-acid only
- NOCO: 24 Wh lithium-ion internal battery; USB in and out at 5V 2.1A
- Guide: recharge about 3 h at 2 A, 6 h at 1 A, 12 h at 0.5 A
- Guide: no more than 5 consecutive starts in 15 minutes, then rest 15 minutes
- Guide: operate -20°C to +50°C; charge 0°C to +40°C; store -20°C to +50°C
- NOCO: 1-year limited warranty, non-transferable; claim terms differ by guide version
Strengths
- Spark-proof and reverse-polarity protection in normal use, plus an IP65 housing
- Starts 12V lead-acid batteries down to 2 volts without the override
- NOCO publishes full specs, engine ratings and the complete warranty text
Caveats
- Manual override disables both safety protections and can push up to 1000 amps
- Guide limits you to five starts in fifteen minutes, then a fifteen-minute rest
- Warranty is non-transferable, and the two guide versions state different claim steps
Read the full NOCO Boost GB40 1000A 12V Lithium Jump Starter guide
How to choose between them
Choose the GOOLOO GP4000 4000A 12V Jump Starter if your situation matches: Larger gas and diesel engines, plus 12V accessory power. Its main caveat: Three published battery capacities for one model: 74Wh, 99.2Wh and 24000 mAh.
Choose the NOCO Boost GB40 1000A 12V Lithium Jump Starter if your situation matches: Gas engines to 6.0L and diesels to 3.0L on 12V lead-acid. Its main caveat: Manual override disables both safety protections and can push up to 1000 amps.
Both entries repeat what each guide records. Confirm the model, included parts and availability on the current listing before ordering.
Primary sources
- GOOLOO GP4000 user manual, English section (maker manuals index copy) Source for GOOLOO GP4000 4000A 12V Jump Starter
- GOOLOO product manuals index listing the GP4000 manual Source for GOOLOO GP4000 4000A 12V Jump Starter
- GP4000 manual revision attached to the listing, with a different specification table Source for GOOLOO GP4000 4000A 12V Jump Starter
- GOOLOO GP4000 jump starter troubleshooting guide, updated June 16, 2026 Source for GOOLOO GP4000 4000A 12V Jump Starter
- NOCO GB40 user guide and warranty, English section (listing-supplied copy) Source for NOCO Boost GB40 1000A 12V Lithium Jump Starter
- NOCO current GB40 user guide, dated 03.07.2025A Source for NOCO Boost GB40 1000A 12V Lithium Jump Starter
- NOCO tech specs page for the GB40 1000A jump starter Source for NOCO Boost GB40 1000A 12V Lithium Jump Starter
- NOCO product overview page for the GB40 Source for NOCO Boost GB40 1000A 12V Lithium Jump Starter
Primary sources checked .