CarCareTruth Score
Decent, but it's tough on the environment.
Opens Amazon in a new tab. No account needed to look.
Saved to your guest loadout. Sign up to also save to your Cabinet (consumables) or Kit (tools you own).
As an Amazon Associate I earn from qualifying purchases. Full disclosure
Prices may varyThis product ranks #15 of 20 in Jump Starter.Three above it ↓
Last reviewed May 26, 2026
TL;DR CE-only (no UL or ETL listing found); claims 4000A peak · label figure not independently verified. Community reception is broadly positive for passenger cars, SUVs, and light trucks. LiPo battery with manufacturer-documented BMS; no active CPSC recall as of 2026-05-16.
The GP4000 is a 12V lithium polymer jump starter that claims 4000A peak for all gas engines and diesel up to 10.0L. The 4000A figure is a label claim · no confirmed independent bench measurement was found for this model at time of review. The unit is CE-marked; UL Product iQ and Intertek ETL searches found no third-party lab listing · a meaningful gap compared to UL-listed competitors. Community evidence is broadly positive for sedans, SUVs, and light trucks under normal and cold conditions. The BOOST button for deeply discharged batteries draws mixed reports. GOOLOO recommends a top-off every 2·3 months · shorter than the 3·6 month category median and a real maintenance commitment.
Good fit for budget-conscious drivers with passenger cars or light trucks who will stay on top of the 2·3 month charge interval. At ~$80, with the unit highly rated by a large owner base, the value case is clear. Skip it if you need confirmed third-party certification, depend on it for large diesel engines, or want a set-and-forget trunk unit.
CE-marked; no UL or ETL certification confirmed in third-party databases as of 2026-05-16. LiPo battery with manufacturer-documented BMS (overcharge, overcurrent, thermal protection). No active CPSC recall; no documented thermal runaway incidents. Prop 65 warning does not apply. No Call2Recycle participation found · disposal follows standard lithium e-waste channels.
The 4000A figure is a label claim. No confirmed independent bench measurement (Project Farm or equivalent) was found for the GP4000 specifically at time of this review. Community reviews broadly confirm the unit starts passenger cars, SUVs, and trucks under normal and cold conditions, but the actual peak-amp output has not been independently verified. The cranking performance score is capped at 6.5 per the rubric rule for ultra-high-claim units without independent bench data.
No. Searches of the UL Product iQ database (productiq.ul.com) and the Intertek ETL database found no listing for the GOOLOO GP4000 as of 2026-05-16. The unit is CE-marked · a self-declared conformity marking standard for EU-export products · but CE is not equivalent to UL or ETL third-party lab certification. The product listing does not claim UL listing.
GOOLOO recommends a top-off charge every 2·3 months. This is shorter than the 3·6 month interval typical of lithium-ion jump starters in this class, consistent with LiPo battery self-discharge characteristics. If stored for extended periods without charging, capacity can degrade. Keep the unit partially or fully charged for best results in an emergency.
The unit carries CE marking and the manufacturer documents 10 built-in protections including overcharge, overcurrent, short circuit, and thermal protection. No CPSC recall is active as of 2026-05-16, and no documented thermal-runaway incidents were found for this model. No third-party UL or ETL certification has been confirmed · buyers who require a third-party lab-certified unit should consider UL-provisional or UL-confirmed alternatives.
Marketing copy from GOOLOO, via Amazon. Not editorial.
Weekly pick
One product, one safety verdict, every week. No spam.
NOCO
Boost HD GB70 Jump Starter
NOCO
Boost X GBX45 Jump Starter
NOCO
Boost Pro GB150 Jump Starter
TOPDON
V2200Plus Jump Starter
As an Amazon Associate I earn from qualifying purchases. Full disclosure
Community
0 postsShare how you use this product
Drop a quick comment or post a full review with photos and a star rating.
Sign in to postNew here? Create a free account.