# NOCO GB20: portable battery jump starter 500A (12V)

![NOCO GB20: portable battery jump starter 500A (12V)](https://bateriasonline.es/4160-home_default/noco-gb20-jump-starter-500a-petrol.jpg)

> Small petrol car up to 4.0 L? The NOCO GB20 gives 500A peak, up to 20 starts per charge and a 24 Wh USB power bank. See who it suits and who should go bigger.

**Category:** [Jump starters and battery boosters](https://bateriasonline.es/en/jump-starters-battery-boosters) → [NOCO](https://bateriasonline.es/en/noco-jump-starters)

- **Canonical URL**: https://bateriasonline.es/en/noco-gb20-jump-starter-500a-petrol
- **Language**: en
- **Brand**: NOCO
- **Reference**: BOL-NOCO-GB20
- **EAN**: 1210000615015
- **MPN**: GB20
- **Price**: 78,70 € (VAT incl., Spain)
- **Last updated**: 2026-11-05

## Quick description

The entry point of the range: 500A peak at 12V for petrol engines of up to 4.0 litres, in a unit weighing just 0.74 kg.
- 500A peak, 12V
- Petrol only, up to 4.0 L
- Up to 20 starts per charge
- 0.74 kg, 167 × 80 × 43 mm

## Description

## NOCO GB20: portable battery jump starter 500A (12V)

Pick the NOCO Boost Sport GB20 if you drive a petrol city car, hatchback or small family car with an engine of no more than 4.0 litres. Its 500A peak and up to 20 starts per charge are sized for exactly that job, and at 0.74 kg it lives happily in a glovebox.
It is not the one for diesel owners: the GB20 has no diesel rating at all. For a diesel up to 3.0 L, or a petrol engine up to 6.0 L, step up to the GB40, which keeps the same 24 Wh battery and body size but doubles the peak to 1000A.
Like its bigger brothers it detects batteries down to 2V, offers a manual override and doubles as a USB power bank.

### Features

- •   Delivers 500A of peak current to 12V lead-acid batteries.
- •   Rated for petrol engines of up to 4.0 litres; no diesel rating is given.
- •   Provides up to 20 jump starts from one full charge.
- •   Spark-proof clamps with reverse polarity protection (UltraSafe).
- •   Works with wet, gel, MF, EFB and AGM batteries, detecting them from 2V, with manual override below that.
- •   The 24 Wh lithium-ion cell charges devices via USB (5V, 2.1A) and recharges in 3 h from a 2A USB charger.
- •   100-lumen LED torch offering 7 modes, SOS and strobe among them.
- •   IP65 housing with ports closed; usable from -20 °C to +50 °C.

### Technical data

| System voltage | 12V |
|---|---|
| Peak current | 500 A |
| Internal battery | Lithium-ion, 24 Wh |
| Petrol engines | Up to 4.0 L |
| Jump starts per charge | Up to 20 |
| Compatible batteries | Lead-acid: wet, gel, MF, EFB, AGM |
| Minimum detection voltage | 2V (manual override below this) |
| USB (input) | 5V, 2.1A |
| USB (output) | 5V, 2.1A |
| Recharge time | 3 h with a 2A USB charger |
| LED torch | 100 lumens, 7 modes (incl. SOS and strobe) |
| Housing protection | IP65 (with ports closed) |
| Operating temperature | -20 °C to +50 °C |
| Charging temperature | 0 °C to +40 °C |
| Cooling | Natural convection |
| Dimensions | 167 × 80 × 43 mm |
| Weight | 0.74 kg |

### In the box

- •   NOCO Boost Sport GB20 jump starter
- •   HD precision battery clamps
- •   USB charging cable
- •   Microfibre storage bag
- •   User guide

### Common questions

Can the GB20 start a diesel?
No diesel figure is given for it; the source rates it only for petrol up to 4.0 L. For diesels the GB40 covers up to 3.0 L.
How many starts do I get per charge?
Up to 20 jump starts on a full charge of its 24 Wh battery.
How long does it take to recharge?
About 3 hours using a 2A USB charger.

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*bateriasonline.es — Batteries and accessories · 2026-11-11*