# NOCO Boost GB20 500A UltraSafe Jump Starter Power Pack

Source: https://www.ranked10.co.uk/tech/best-jump-starter/noco-boost-gb20
Ranked #5 in "Best Jump Starter 2026: 10 Car Battery Boosters Ranked": https://www.ranked10.co.uk/tech/best-jump-starter

- Price: £71.99 (checked on Amazon UK on 2026-09-03)
- Amazon rating: 4.6 from 12,968 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B015TKPT1A?tag=ranked10-21

The NOCO Boost GB20 500A UltraSafe Jump Starter Power Pack is the cheapest way into the NOCO Boost range, and it takes fifth place in our jump starter ranking. It is the lightest of the four NOCO packs in that ranking at 454g, which is the concrete reason to pick it: it rides in a motorbike seat pack or a glovebox without being noticed. Everything on this page comes from the Amazon listing rather than from our own testing, including the GBP 71.99 price, the specification table, the spread of its 12,968 ratings and two review quotes copied word for word.

One line of that specification rewards a closer look. The battery capacity field reads 500 Amp Hours, but the Amperage field also reads 500 Amps and the Peak Output Current field reads 500 Amps as well. The same number sits in all three, so what the capacity row actually shows is the peak current in the wrong unit, and the listing never publishes the real size of the battery. The dimensions are worth a second look too: 11.7 x 20.8 x 10.7 centimetres, the same figures the GB40 listing gives, even though the GB20 weighs 454 g against the GB40's 1.09 kg.

## Specification

| Field | Value |
|---|---|
| Brand | NOCO |
| Model number | GB20 |
| Manufacturer part number | GB20 |
| Item type | Jump Starter |
| Peak output current | 500 Amps |
| Amperage | 500 Amps |
| Battery capacity (as listed) | 500 Amp Hours |
| Voltage | 12 Volts |
| Battery cell composition | Lithium Ion |
| Compatible vehicle type | Boat, Moto, Passenger Car |
| Automotive fit type | Universal Fit |
| Item dimensions (D x W x H) | 11.7 x 20.8 x 10.7 centimetres |
| Item weight | 454 g |
| Included components | GB20 Jump Starter Power Pack, Microfibre Storage Bag, USB Charging Cable, User Guide |
| Number of items | 1 |
| Specification met (as listed) | UL |
| Manufacturer warranty | 1-Year Limited |
| EU spare part availability | 1 Year |
| ASIN | B015TKPT1A |

## Questions people ask

**What will the NOCO Boost GB20 start?**

The listing gives 500 peak amps and names boats, motorbikes and passenger cars as the compatible vehicle types, with a universal fit. It does not publish an engine size limit, so read it as the small end of the NOCO Boost range rather than a big-engine pack.

**How big is the battery?**

The listing does not say. The battery capacity field reads 500 Amp Hours, which is the peak current figure in the wrong unit: the Amperage and Peak Output Current rows both give 500 Amps as well. The cells are lithium ion at 12 volts, and that is as far as the specification goes.

**How heavy is it and will it fit a glovebox?**

The specification table gives 454 g and 11.7 x 20.8 x 10.7 centimetres. That weight is less than half the 1.09 kg the GB40 listing gives, although both listings publish the same dimensions.

**What comes in the box?**

The listing names four things: the GB20 pack itself, a microfibre storage bag, a USB charging cable and a user guide. It does not name jump leads in that list, while the GB40 listing names heavy duty jump leads in the same field.

**Is the GB20 certified?**

We make no claim either way. The specification table has a field called Specification Met, and on this listing it reads UL. That is what the listing publishes, nothing more.

**What warranty does it come with?**

NOCO gives a 1-Year Limited warranty according to the listing, and the same listing puts EU spare part availability at 1 year.