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Prices may varyThis product ranks #2 of 20 in Jump Starter.
Last reviewed June 1, 2026
TL;DR No third-party certification confirmed (the product spec table shows "Specification Met: energy" · no UL or ETL claim found); 1250A 12V lithium jump starter community-confirmed for gas and diesel vehicles · the peak-amp label claim has not been independently bench-tested. Standard Li-ion battery; 60W USB-C Power Delivery; IP65-rated; no documented thermal runaway incidents.
The GBX45 is a 1250A portable jump starter rated for gasoline engines up to 6.5L and diesel up to 4.0L. No third-party electrical safety certification (UL or ETL) was found · the product spec table lists "Specification Met: energy" rather than UL, and the manufacturer's specs page makes no certification claim. NOCO's UltraSafe 2.0 system includes spark-proof clamps and reverse-polarity protection, which community owners consistently describe as foolproof in operation. The 1250A peak rating has not been independently bench-tested; community evidence spans passenger cars with completely dead batteries, a 3-litre diesel, and motorcycles · all starting reliably. The detachable clamp leads allow the unit to fit in a glovebox, and at 2.16 lbs it is one of the more compact options in the class rated for diesel engines. The 60-second timer conserves the battery between connection and cranking; a manual override button starts the vehicle immediately.
The GBX45 fits drivers who want a compact jump starter capable of covering everything from a motorcycle to a mid-size truck or light diesel · stored in a glovebox and used infrequently as emergency equipment. The 60W USB-C Power Delivery is a genuine feature at this tier, not just a token USB-A port. Skip it if you need independent certification documentation (no UL or ETL confirmed) or if you're regularly starting large-displacement diesels above 4.0L · the GB70 or GBX75 cover that range.
The GBX45 is an electronics device with no SDS. No third-party certification (UL or ETL) has been confirmed · the product listing does not claim UL, and no certification was found in third-party databases as of 2026-06-01. Standard Li-ion battery with NOCO UltraSafe 2.0 BMS and reverse-polarity protection; no documented thermal runaway incidents; CPSC recall database returned no active recall for this model (checked 2026-06-01). California Prop 65 warning applies. Battery disposal via Call2Recycle drop-off at Home Depot, Lowe's, and Staples · no manufacturer pre-paid take-back documented.
No third-party certification has been confirmed for the GBX45. The product spec table shows 'Specification Met: energy' · not UL or ETL. No UL or ETL claim was found on the manufacturer's specs page (no.co/gbx45/specs) or any third-party database as of 2026-06-01. If a UL listing is later confirmed via productiq.ul.com, the safety certification and health scores would improve.
Yes. The GBX45 includes a 60-watt USB-C port that supports both input and output via Power Delivery · making it capable of fast-charging phones, tablets, and laptops. It also recharges itself from 0% to jump-start-ready in 5 minutes, or fully in 48 minutes, via a USB-C PD charger.
NOCO rates the GBX45 for up to 6.5L gasoline and up to 4.0L diesel engines at 12V. Community evidence confirms reliable starting for passenger cars, SUVs, and a 3-litre diesel vehicle. Multiple owners report successful starts on completely dead batteries.
The GBX45 uses an integrated 60-second timer to conserve energy from its high-voltage design. The timer activates when you connect the clamps, giving you 60 seconds to attempt a start. A manual override button allows you to start immediately without waiting · several owners highlight this for completely dead batteries where the automatic mode may not detect enough voltage.
No. NOCO's official specs page (no.co/gbx45/specs) lists '31 Watt-Hour Lithium-Ion' · standard Li-ion, not LFP. Some third-party reviews have claimed LFP, but this contradicts NOCO's own documentation. The standard Li-ion designation is used throughout scoring.
The Amazon listing for NOCO Boost X GBX45 Jump Starter carries a California Prop 65 warning. California requires this warning on a very wide range of manufactured goods — including electronics with wiring, solder joints, or plastic/metal housings — whenever trace exposure to any of roughly 900 listed substances (commonly phthalates or heavy metals) is possible, regardless of whether the specific product poses a meaningful health risk. As a passive electronics product, NOCO Boost X GBX45 Jump Starter has no Safety Data Sheet, so there's no chemistry breakdown to translate beyond that.
Marketing copy from NOCO, via Amazon. Not editorial.
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