GOOLOO - GT4000 4000A Supersafe Jump Starter with 100W Bidirectional Fast Charge & Pre-heating Tech

The GOOLOO GT4000S is a powerful yet compact 4000A lithium jump starter that can start almost all 12V vehicles, including up to 12.0L gas and 10.0L diesel engines, within seconds. It supports 100W two-way fast charging and can be fully charged in about 1.2 hours, with just 5 minutes of charging enough to start a car. It also charges laptops via the Type-C port. Featuring a clear LED screen, 10-layer safety protection, long 24-month standby time, multiple USB ports, a 15V DC output, and a 400-lumen multi-mode flashlight, it works as both a jump starter and a versatile portable power bank.

The GBX75 Boost X is a new class of portable lithium jump starters—engineered for extreme performance and rated at 2,500 amps to start gas engines up to 8.5 liters and diesel engines up to 6.5 liters. Featuring our upgraded UltraSafe 2.0 technology, it offers spark-proof connections and reverse polarity protection, now with enhanced thermal efficiency and power management for even greater safety and battery life. Designed with a high-voltage output system, the GBX75 includes an integrated 60-second timer to conserve energy—delivering up to 12 jump starts per charge with maximum power on every start. Even if completely depleted, it can gain enough power for a jump start in just 5 minutes or fully recharge in only 1.8 hours via USB-C Power Delivery. A 60-watt USB-C port provides both input and output, turning Boost X into a high-performance power bank for fast charging phones, tablets, laptops, and other USB-C devices. A precision-engineered 400-lumen LED flashlight features seven modes, including SOS and strobe, to light up dark workspaces or help in roadside emergencies. The GBX75 jump starter comes complete with heavy-duty jumper clamps, a USB-C charging cable, and a microfiber storage bag, all backed by a 1-year limited warranty and proudly engineered in the USA. Whether you’re looking for a car jump starter, battery jump box, jumper pack, power pack jump starter, or a reliable jump starter battery pack to keep in your glovebox, the GBX75 delivers unmatched performance, trusted durability, and peace of mind—on the road, off the grid, or wherever your next adventure takes you.

GOOLOO is a SuperSafe and reliable jump starter offering the users maximum power. This jump starter has a 4000A peak current. You can use it to start 10.0L vehicles and any gasoline engines in a few minutes. GOOLOO 4000A Peak portable car battery jump starter comes with 88.8Wh high capacity and portable battery charger. It has two USB charge ports. This device can be used anywhere. It is equipped with type-C input and output, which enables it to supports type-C charging USB. The other outstanding thing about this best jump starter for the large engine is its ruggedness and super security. The jump starter cables are all made of metal clamps to prevent them from breaking in the long run.It is more powerful than many similar products and it's also a great gift choice!