NOCO Boost GB40
A portable jump starter for compatible 12 V lead-acid vehicles, intended for starting assistance rather than long-term battery maintenance.
Research-based buying advice. Product sources checked 2026-10-28. This is not a hands-on review. Recommendations are our interpretation of the documented features and the use cases discussed below.
Where to buy
Confirm price and delivery at checkout| Retailer | Visit retailer |
|---|---|
| Amazon.ca | Check Price |
Prices and availability can change. Confirm the final price, shipping and taxes at the retailer.
Start with the vehicle, not the biggest amp number
Check the vehicle manual’s jump-start procedure, battery voltage and designated connection points. The GB40 is specified for 12 V lead-acid vehicle batteries; its internal lithium battery does not make it a universal lithium-battery jump starter. The advertised peak-current number is not a continuous charger output.
An emergency pack needs an ownership routine
Before buying, decide where you will keep the pack and when you will check its charge. A forgotten device is less useful when you need it. Make sure the intended user can find and understand the instructions without relying on mobile reception at the roadside. Follow NOCO’s temperature and storage requirements rather than assuming a glovebox is always suitable.
Do not confuse a successful start with a repair
Starting assistance addresses an immediate problem; it does not explain why the vehicle failed to start. Repeated trouble calls for diagnosis. If the goal is to maintain a healthy battery during storage and mains power is available, investigate a compatible maintainer instead. Never attempt to jump-start a frozen, leaking or damaged battery.
Check the supplied revision
Confirm the charging connector and included cable on the exact listing and package. Manufacturer pages can describe a revised bundle while retailer stock varies. We do not promise a number of starts, cold-weather starting performance or charging time from the headline rating.
Sources and further reading
No hands-on test has been performed for this product profile. No review score or measured performance result is assigned.
Pros
- Portable starting assistance without a mains outlet at the vehicle
- Documented vehicle-battery and engine limits
Cons
- Must be kept charged and stored within its manual’s limits
- Does not diagnose a battery fault or maintain a parked vehicle
Specifications 4 details
| Battery support | 12 V lead-acid vehicle batteries |
|---|---|
| Engine guidance | Up to 6.0 L gasoline / 3.0 L diesel, per NOCO |
| Internal battery | Rechargeable lithium-ion |
| Peak starting current | 1000 A (manufacturer rating) |