GOOLOO GT4000S

The GOOLOO GT4000S is a heavy-duty portable jump starter designed for drivers who need peace of mind for large displacement engines. With a massive 4000-amp peak current, this unit is engineered to handle virtually any gas engine and diesel engines up to 10 liters. In our testing, the jump starter felt robust and well-built, featuring a 100W two-way fast-charging capability that allows you to recharge the unit itself in record time or use it as a high-speed power bank for laptops and tablets. It sits in the premium tier of portable jump starters, offering a balance of raw power and modern convenience features like a bright LED flashlight for roadside emergencies. While the GOOLOO GT4000S excels at turning over stubborn engines, it is physically larger and heavier than entry-level lithium jump packs. This makes it a better choice for keeping in a trunk or truck bed rather than a glove compartment. For owners of large SUVs, heavy-duty trucks, or diesel-powered work vehicles, this jump box provides the reliability needed to ensure you are never stranded by a dead battery. It is a professional-grade tool that prioritizes performance and charging speed over extreme portability, making it a reliable companion for long road trips or daily work use.