Gooloo GP4000RED Jump-Starter – Compact 12V Booster with USB-C Powerbank
The Gooloo GP4000RED is a portable jump-starter designed to revive a flat car battery quickly and reliably. Weighing just 1.5 kg, it fits in a glove compartment or backpack and delivers up to 800 A of starting current.
800 A peak current handles most petrol and diesel engines in cold conditions
Dual USB ports (Type A and Type C) let you charge phones, tablets, or other USB devices on the go
Built-in LED flashlight and powerbank functions add everyday utility beyond jump-starting
Reverse-polarity protection safeguards both the booster and the vehicle's electrical system
What makes the GP4000RED different
Unlike bulky traditional jump boxes, the GP4000RED combines a compact lithium-ion battery with a full powerbank and flashlight in a single unit. The 12 V output is optimised for standard 12 V automotive batteries, while the USB-C port supports modern devices that require faster charging.
Ideal for
Car owners who need a reliable, portable emergency-start solution for seasonal or unexpected battery failures. Also suited for outdoor enthusiasts, caravan users, and anyone who keeps USB-charged devices powered during travel.
How to use the Gooloo GP4000RED
Connect the red clamp to the vehicle's positive battery terminal
Connect the black clamp to a metal ground point on the engine block
Turn on the booster and attempt to start the engine
Once the engine runs, disconnect the clamps in reverse order
Gooloo is a Swiss-market brand specialising in portable power and jump-start solutions. The GP4000RED sits in the compact booster segment, targeting drivers who need a lightweight, multi-function emergency starter with USB charging capability.
The 800 A peak current is sufficient for most 12 V petrol and diesel passenger cars. For larger engines or extreme cold, multiple attempts with a brief pause between starts are recommended.
Yes. The USB Type A and USB Type C ports are active during operation, allowing you to charge phones or tablets while the booster is connected to the vehicle battery.
As a powerbank the GP4000RED provides multiple full charges for typical smartphones. As a jump-starter a single full charge supports several start attempts, depending on battery condition and engine size.
The GP4000RED unit, USB charging cable, red and black clamps with crocodile clips, and a carrying pouch.
Yes. The built-in reverse-polarity protection prevents damage to the booster and the vehicle if the clamps are connected to the wrong terminals.
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