GOOLOO GP4000 4000A 12V Jump Starter vs NOCO Boost X GBX75 2500A 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 X GBX75 2500A 12V Lithium Jump Starter
Gas engines to 8.5L and diesels to 6.5L on 12V lead-acid
The GBX75 is NOCO's 2500-amp Boost X on a 74 Wh pack, rated for 8.5-litre gas and 6.5-litre diesel engines. Boost runs in 60-second bursts and must be power-cycled between them, and it refuses to jump start at all when its Cold or Hot LED is solid.
Published specifications
- NOCO: 2500 A peak; gas up to 8.5 L, diesel up to 6.5 L; 12V lead-acid only
- NOCO: 74 Wh lithium-ion; USB-C in and out to 20V 3A; USB-A out 5V 2.1A
- Guide: about 1.7 h to recharge at 60W, about 20 h from a 5W charger
- Guide: 60-second boost timeout; power off and on to start another attempt
- Guide: operate -20°C to +50°C; charge 0°C to +40°C; store -20°C to +50°C
- Guide: 1-year limited warranty, non-transferable, RMA required for a claim
Strengths
- Rated for diesel up to 6.5 litres as well as 8.5-litre gas engines
- 60W USB-C Power Delivery in and out, with about a 1.7-hour recharge
- Clear Cold, Hot and numbered error codes instead of one vague fault light
Caveats
- Manual override disables the protections and the 60-second timeout together
- Charging from a 5W phone brick takes about 20 hours by NOCO's own table
- Will not jump start at all while the Cold or Hot LED is solid
Read the full NOCO Boost X GBX75 2500A 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 X GBX75 2500A 12V Lithium Jump Starter if your situation matches: Gas engines to 8.5L and diesels to 6.5L on 12V lead-acid. Its main caveat: Manual override disables the protections and the 60-second timeout together.
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 GBX75 user guide and warranty, English section (listing-supplied) Source for NOCO Boost X GBX75 2500A 12V Lithium Jump Starter
- NOCO tech specs page for the GBX75 2500A Boost X jump starter Source for NOCO Boost X GBX75 2500A 12V Lithium Jump Starter
Primary sources checked .