NOCO Boost Plus GB40
#9 in Cars and SUVsFull review
For drivers of four- and six-cylinder cars who want a proven, compact pack to keep in the car. Owners of bigger engines should step up to a GBX55 or larger.
Amazon $99.95$99.95
2.6/5
For drivers of cars, crossovers and mid-size SUVs who want a proven NOCO pack with headroom over the GB40. Check the GBX55 price first, since it charges far faster for similar money.
- 7 L gas, 4.5 L dieselEngines
- 35 WhBattery
- YesOverride
- 2.7 lbWeight
- 1 yearWarranty
Check price at Amazon$149.95
Price checked October 30, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Rated for most V6 and smaller V8 cars up to 7.0 L gas
- Can force a jump on a completely dead battery with manual override
- Sealed against rain and dust
- Doubles as a phone power bank
Cons
- Slow to recharge: about 5 hours over a basic 10 W USB-C input
- Costs about as much as the faster-charging GBX55, which covers bigger engines
- One-year warranty is short
The NOCO Boost family
Every NOCO Boost model we rank, smallest first. Ratings compare each against its own engine size.
| Model | Engines | Rating | Price |
|---|---|---|---|
| NOCO Boost GB20 | 4 L gas | 3.4/5 | $79.95 |
| NOCO Boost Plus GB40 | 6 L gas, 3 L diesel | 3.3/5 | $99.95 |
| NOCO Boost GB50 (this one) | 7 L gas, 4.5 L diesel | 2.6/5 | $149.95 |
| NOCO Boost GB70 | 8 L gas, 6 L diesel | 3.6/5 | $139.99 |
| NOCO Boost Pro GB150 | 9 L gas, 7 L diesel | 2.9/5 | $299.95 |
How it scores
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its engine size. How we rank explains each one.
Specifications
| Model number | GB50 |
|---|---|
| Starting | |
| Rated engines | 7 L gas, 4.5 L diesel |
| Peak amps (maker) | 1,500 A |
| Voltage | 12 V |
| Manual override | Yes |
| Lowest operating temperature | -4 °F |
| Battery and charging | |
| Chemistry | Lithium-ion |
| Capacity | 35 Wh |
| USB-C input | 10.5 W |
| Recharge time | 5 hours |
| USB outputs | USB 10.5 W |
| Build | |
| Flashlight | Yes |
| Air compressor | No |
| Water resistance | IP65 |
| Dimensions | 8.58 x 3.42 x 3.16 in |
| Weight | 2.7 lb |
| Warranty | 1 year |
| Released | 2019-04 |
Alternatives in this engine size
NOCO Boost X GBX45
#10 in Cars and SUVsFull review
For car and small-SUV owners who want a compact pack that refills fast from any USB-C charger. It costs a little more than the GB40 but recharges several times faster.
Amazon $124.95$124.95
Fanttik Beyond 10 Apex Preorder
#11 in Cars and SUVsFull review
For drivers of cars and small SUVs up to 7 liters who want a jump starter and tire pump that fits in a door pocket. Not for big trucks or deep cold.
Amazon $169.99$169.99
Compare
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