NOCO
NOCO Boost GB50 UltraSafe 1500A Lithium Jump Starter
Editor’s scorecard
Editorial scores from 0 to 10, comparable across products in this category.
Full specifications
Power & battery
| Power source | rechargeable battery |
| Peak current | 1500 A |
| Uses per charge | 30 |
| Charge time | 5 h |
| Voltage | 12 V |
Size & build
| Weight | 1.22 kg |
| Dimensions | 20.3 x 12.1 x 10.2 cm (8.25 x 4.75 x 4 in) |
| Material | IP65-rated rubber-overmolded housing |
| Certifications | IP65 water/dust resistant |
Other details
| Peak amperage | 1500A |
| Starts per charge | Up to 30 |
| Battery chemistry | Lithium |
| Protection | Spark-proof, reverse-polarity protection |
| Flashlight | 200-lumen LED, 7 modes including SOS and strobe |
| USB power bank output | Yes — charges phones and tablets |
The review
NOCO's Boost line is one of the more trusted names in portable jump starters, and the GB50 sits in the middle of their range: enough peak amperage (1500A) to comfortably start most trucks and SUVs, without stepping up to the heavier-duty GBX75 that's built for larger diesels.
The spark-proof, reverse-polarity-protected clamps are the standout safety feature — they simply won't connect if you get the polarity backwards, which matters most for anyone new to jump-starting a car themselves. Beyond the jump-start function, it doubles as a 200-lumen flashlight with an SOS mode and a USB power bank, useful in the same roadside-emergency scenarios the unit is meant for.
At 2.7 lbs it fits easily in a glovebox or trunk kit. The trade-off versus the cheaper GB20 is price — you're paying a premium for the NOCO name, the higher amperage ceiling and the IP65 housing, but the 16,800+ reviews at 4.6 stars suggest it holds up.
Pros
- Spark-proof, reverse-polarity-protected clamps — hard to connect wrong
- 1500A covers most trucks and SUVs, not just small sedans
- Doubles as a USB power bank and 200-lumen flashlight
- IP65-rated housing and a large, trusted review base (16,800+ at 4.6 stars)
Cons
- Costs more than budget jump starters with similar peak-amp claims
- Not rated for the largest diesel trucks (NOCO's GBX75 covers those)
- 1-year warranty is shorter than some competitors
Ideal for: Drivers who want one reliable jump starter for gas engines up to 7.0L or diesel up to 4.5L, plus phone charging and a real flashlight in an emergency kit.
What buyers say
With over 16,800 ratings at 4.6 stars, buyers consistently point to the safety clamps and build quality; occasional complaints mention the price relative to no-name alternatives.
Summary based on reviews visible on Amazon at capture time.
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