NOCO Boost GB20 UltraSafe Jump Starter 500A
- 500 amp peak current
- Up to 4.0L gas engines
- Lithium, 2150 mAh
- Spark-proof, reverse polarity protection
- USB-C cable and storage bag included
- 16 ounces, 4.61 x 8.19 x 4.21 inches
- 1 year limited warranty
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A compact lithium jump starter for small gas engines in cars, motorcycles, ATVs and boats, with spark-proof protection. Diesel engines are not mentioned.
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ASIN: B015TKPT1AModel: GB20Category: Jump Starters
Overview
A glovebox, motorcycle bag or garage shelf can hold this compact lithium booster for small gas engines. Needle-nosed clamps, spark-proof connections and reverse polarity protection are listed, and a USB-C cable comes with it.
Small size and low weight make it easy to store, and the spark-proof and reverse polarity protection reduce connection mistakes. The limitation is capacity, because it is rated for smaller gas engines only and the listing says nothing about diesel.
Who it's for
A commuter car, motorcycle or lawn mower owner who wants emergency starting power in a small package. Look elsewhere for diesels or large gas engines, which the listing does not cover.
Pros and cons
- Compact and light
- Reverse polarity protection
- USB-C cable included
- Storage bag included
- Small engines only
- Diesel not listed
- Short cable length
- One year limited warranty
Performance notes
Peak current describes the short burst that turns the starter, and the engine size rating shows how large an engine it can start. Reverse polarity protection blocks power if the clamps are reversed. A short cable limits how far the unit can be placed from the battery.
Specifications
| Brand | Noco |
|---|---|
| Model | GB20 |
| Dimensions & fit | |
| Item weight | 16 ounces |
| Item Dimensions D x W x H | 4.61 x 8.19 x 4.21 inches |
| Cable Length | 7 inches |
| Engine size | Up to 4.0L gas |
| Capacity & performance | |
| Peak Output Current | 500 A |
| Battery Capacity | 2150 milliamp hours |
| Power & efficiency | |
| Battery Type | Lithium |
| Voltage | 12 volts |
| Compatibility & installation | |
| Compatible with Vehicle Type | ATV, Lawn Mower, Motorcycle, Passenger Car, RV, Tractor, UTV, Van, Watercraft |
| Included components | |
| Included Components | GB20 jump starter, microfiber storage bag, needle-nosed booster clamps, USB-C cable, user guide |
| Unit Count | 1 Count |
| Warranty & support | |
| Manufacturer Warranty Description | 1-Year Limited Warranty |
| Other details | |
| Automotive Fit Type | Universal Fit |
| EU Spare Part Availability Duration | 1 years |
| Specification Met | UL |
Closest rivals on specs
S ZEVZO ET03 Jump Starter 4000A- Item Weight 1 vs 1.4 pounds (-29%)
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OXILAM Y2 Jump Starter 6000A- Item Weight 1 vs 0.21 pounds (+376%)
Frequently asked questions
Can the NOCO GB20 start a diesel truck?
The listing rates it for gas engines up to 4.0L and does not mention diesel. Do not assume it can start a diesel.
Is the NOCO GB20 a power bank too?
The item type name calls it a portable power bank charger and a USB-C cable is included. The listing does not describe output ports.
Which vehicles is the NOCO GB20 listed for?
The listing names ATV, lawn mower, motorcycle, passenger car, RV, tractor, UTV, van and watercraft.
Does the NOCO GB20 have reverse polarity protection?
Yes. The title lists spark-proof and reverse polarity protection.