Clore Automotive JNC325 vs NOCO GB40
Clore Automotive JNC325
The short answer
Clore Automotive JNC325 comes out ahead overall with 6.9/10 against 5.9/10 for the NOCO GB40. Clore Automotive JNC325 is stronger on starting power, battery capacity & standby, ease of use & safety features and battery safety & sustainability. At current verified prices, the NOCO GB40 costs about $94.04 less.
- Choose the Clore Automotive JNC325 if: Buyers who want long heavy-gauge leads, full-size clamps and a maker-stated UL 2743 safety certification over headline amps.
- Choose the NOCO GB40 if: Owners of typical cars and small SUVs (up to 6.0L gas) who want a small, IP65 weatherproof pack sold and shipped by Amazon.
Scores by criterion
| Criterion | Clore Automotive JNC325 | NOCO GB40 |
|---|---|---|
| Starting Power | 7.5450 start-assist amps, rated 8L gas/6L diesel; based on Car and Driver's qualitative test, which needed the override. | 6.5Fine for typical cars; needed the override on a dead battery; 6L gas/3L diesel limit. |
| Battery Capacity & Standby | 5.5Capacity not published or measured. | 4.015.57 Wh measured of 24 Wh claimed; one jump took it to 25%. |
| Ease of Use & Safety Features | 8.8Longest, heaviest-gauge leads and best clamps among the lithium packs. | 6.06-inch leads and stiff clamps; simple controls; spark-proof. |
| Build Quality & Durability | 8.0Pro build; replacement cable/clamp sets and charging kit available; 1-year warranty. | 7.8IP65 with a long track record; soft bag only. |
| Versatility | 4.5USB-A only (2.4A/1.0A); no USB-C PD. | 4.510W USB and a light only. |
| Battery Safety & Sustainability | 7.5Maker states SGS certification to UL 2743 (not registry-verified); replaceable parts. | 6.0No sparks seen in testing; Prop 65 notice; no UL 2743 confirmed. |
| Value | 5.8About $194 with fewer extras than $120 rivals. | 6.0$99.95 is high for its capacity. |
Specifications
| Spec | Clore Automotive JNC325 | NOCO GB40 |
|---|---|---|
| Peak Current | 2,000 A | 1,000 A |
| Max Gas Engine (rated) | 8 L | 6 L |
| Max Diesel Engine (rated) | 6 L | 3 L |
| Battery Chemistry | Lithium | Lithium-ion |
| Rated Capacity | — | 24 Wh |
| Measured Usable Capacity (TechGearLab) | — | 15.57 Wh |
| Weight | 4.3 lb | 2.4 lb |
| Built-in Air Compressor | No | No |
| Max USB Output | — | 10 W |
| Water/Dust Rating | — | IP65 |
| UL 2743 Stated by Manufacturer | Maker-stated (SGS to UL 2743); registry not verified | — |
Clore Automotive JNC325
Pros
- 24-inch #6 AWG leads and full-size clamps
- Car and Driver's 2026 Best Overall
- Maker-stated UL 2743 certification via SGS
- Replacement charging and cable parts available
- Sold directly by Amazon
Cons
- Costs much more than the MV24 for less power
- USB-A outputs are weak (2.4A and 1.0A), with no USB-C
- No published capacity
- 1-year limited warranty
A good fit if clamp and cable quality and a named safety certification matter more to you than extras or headline amps.
Full Clore Automotive JNC325 review →NOCO GB40
Pros
- IP65 water and dust resistance
- Compact at 2.4 lb
- Spark-proof and reverse-polarity protection
- Recommended by four major test outlets
- Sold by Amazon
Cons
- Small usable battery: 15.57 Wh measured
- Very short leads (about 6 in.), so the pack must sit on the battery
- Slow 10W USB-C and about 3 hours to recharge
- Soft bag rather than a hard case
A dependable weatherproof pack for typical cars and small SUVs. It ranks last on our weighted score because of its small battery, but it suits owners who value size and weather resistance. If you order one, check that the port is USB-C.
Full NOCO GB40 review →Both products are part of our guide The Best Jump Starters of 2026, where you can see every pick, how we score and current prices from each retailer.