# NOCO GBX45: portable battery jump starter 1250A (12V)

![NOCO GBX45: portable battery jump starter 1250A (12V)](https://bateriasonline.es/4223-home_default/noco-gbx45-jump-starter-1250a-usb-c.jpg)

> NOCO GBX45: 1250A peak for petrol to 6.5 L and diesel to 4.0 L, 60W USB-C that recharges it in 0.8 h, only 0.59 kg. See how it compares with the GB40.

**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-gbx45-jump-starter-1250a-usb-c
- **Language**: en
- **Brand**: NOCO
- **Reference**: BOL-NOCO-GBX45
- **EAN**: 1210000620064
- **MPN**: GBX45
- **Last updated**: 2026-11-04

## Quick description

The lightest Boost X: 1250A peak, petrol up to 6.5 L and diesel up to 4.0 L, and a full recharge in 0.8 h through 60W USB-C.
- 1250A peak, 12V
- Petrol 6.5 L / diesel 4.0 L
- Full charge in 0.8 h at 60W
- Only 0.59 kg

## Description

## NOCO GBX45: portable battery jump starter 1250A (12V)

The NOCO Boost X GBX45 fits drivers of cars, motorcycles, SUVs, vans, boats, motorhomes or tractors with petrol engines up to 6.5 L or diesels up to 4.0 L who want a jump starter that is quick to top up. At 0.59 kg it is the lightest of the Boost X models.
Against the GB40 it offers more peak (1250A vs 1000A), an extra litre of diesel cover and, above all, 60W USB-C Power Delivery: 0.8 h for a full recharge, or enough for a start after just 5 minutes of charging. For diesels up to 5.0 L, step up to the GBX55.
UltraSafe 2.0, a 60-second timer, a 100-lumen torch and IP65 protection are included.

### Features

- •   1250A peak current for 12V lead-acid batteries.
- •   Petrol engines up to 6.5 L, diesel engines up to 4.0 L.
- •   60W USB-C Power Delivery port for both input and output.
- •   Full recharge in 0.8 h with a 60W charger, or 4 h at 10W.
- •   Ready to jump start from 0% after 5 minutes on charge.
- •   UltraSafe 2.0: spark-proof, reverse polarity protected, improved thermal management.
- •   Extra 5V, 2.1A USB-A output and a 60-second power-saving timer.
- •   100-lumen LED torch with SOS and strobe.
- •   31 Wh battery, 0.59 kg, 173 × 83 × 53 mm, IP65 with ports closed.

### Technical data

| System voltage | 12V |
|---|---|
| Peak current | 1250 A |
| Internal battery | Lithium-ion, 31 Wh |
| Petrol engines | Up to 6.5 L |
| Diesel engines | Up to 4.0 L |
| Compatible batteries | Lead-acid: wet, gel, MF, EFB, AGM |
| USB-C (input) | 5V 1.5A / 9-20V 3A (Power Delivery, 60W) |
| USB-C (output) | 5-20V 3A (Power Delivery, 60W) |
| USB (output) | 5V, 2.1A (10W max.) |
| Recharge time | 0.8 h with a 60W USB-C PD charger; 4 h at 10W |
| LED torch | 100 lumens, with SOS and strobe |
| Jump start timer | 60 s (power saving) |
| Housing protection | IP65 (with ports closed) |
| Operating temperature | -20 °C to +50 °C |
| Charging temperature | 0 °C to +40 °C |
| Cooling | Natural convection |
| Dimensions | 173 × 83 × 53 mm |
| Weight | 0.59 kg |

### In the box

- •   NOCO Boost X GBX45 jump starter
- •   HD precision battery clamps
- •   USB-A to USB-C cable (0.6 m)
- •   Microfibre storage bag
- •   User guide

### Common questions

How fast does it recharge?
0.8 hours with a 60W USB-C PD charger, 4 hours at 10W. After 5 minutes of charging from 0% it can already jump start.
GBX45 or GB40?
The GBX45 is lighter (0.59 vs 0.74 kg), gives 1250A instead of 1000A, covers diesel up to 4.0 L instead of 3.0 L and charges via 60W USB-C.
Can it charge a laptop?
Yes, its USB-C output supplies up to 60W (5-20V, 3A) for phones, tablets and laptops.

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