The GOOLOO GT4000 Smart Tech jump starter delivers reliable performance in cold weather, starting your car even in extreme temperatures as low as -40°C. Its advanced battery technology and powerful 4000A peak current ensure instant ignition when you need it most, no matter how harsh the winter conditions. Never be stranded in the cold again – this robust jump starter works when others fail.

The GOOLOO GT4000, the best battery booster for diesel engines, features advanced battery preheating technology and ensures reliable performance even in extreme cold down to -40°F. This innovative system automatically heats the internal battery to its optimal operating temperature and delivers full power when you need it most – no matter how cold it is. Winter-proof performance for arctic emergencies.

The GOOLOO GT4000, the best jump-start kit, delivers 4000 A peak current for reliable jump-starting of stranded vehicles, including large 12-liter gasoline and 10-liter diesel engines – perfect for trucks, SUVs, and heavy-duty machinery. Even after 24 months of standby operation without use, its intelligent energy management ensures the unit is always ready for an emergency. No more dead batteries – just instant jump-starts, anytime, anywhere.

The GOOLOO GT4000 jump starter power bank offers 100W dual-way fast charging, functioning as both a 100W high-speed charger for compatible devices and a 100W fast charger for the device itself. This dual-function design allows for fast charging of laptops (via USB-C PD) while simultaneously providing ultra-fast charging of the jump starter.

The compact GOOLOO GT4000 jump starter boasts ten advanced safety features for worry-free operation in all conditions. AI-powered software continuously monitors current flow and battery status in real time, while multiple physical safeguards provide comprehensive protection: reverse polarity protection prevents damage from incorrect connections, overcharge/overvoltage protection ensures optimal charging conditions, and spark-proof technology prevents dangerous sparking during operation. Additional protection features include short-circuit protection in case of sudden electrical disturbances, extreme temperature protection, overcurrent/overload protection against voltage spikes, and reverse charge protection to prevent energy backflow. This military-grade safety system guarantees reliable and risk-free performance when jump-starting vehicles and charging devices.

The portable GOOLOO GT4000 jump starter offers 100W USB-C PD fast charging to charge your MacBook at maximum speed. Includes a USB-C to USB-C cable – works with all USB-C laptops and tablets.

The best emergency car battery charger, the GOOLOO GT4000, comes complete with a 100W car charger, enabling ultra-fast charging in about 1 hour on the go.

The GOOLOO GT4000 portable car battery charger and jump starter achieves a full charge in just 1 hour with the included 100W wall charger – the fastest recovery time in its class. Must be purchased separately.

The best jump starter for diesel trucks, the GOOLOO GT4000, boasts an industry-leading standby time of 24 months and provides up to two years of reliable emergency power without the need for recharging. The GOOLOO GT4000 diesel jump starter battery pack features an intuitive 3.2-inch LED screen that provides clear, real-time updates on the charge status for precise monitoring.

The GOOLOO GT4000 diesel jump starter battery pack features an intuitive 3.2-inch LED screen that provides clear real-time updates on the charge level for precise monitoring.

The GOOLOO GT4000 jump starter for diesel truck batteries features a multifunctional LED emergency light with three important functions for safety and convenience:

NORMAL (Continuous Light) – Bright 1000-lumen floodlight for repairs, camping or roadside work

STROBOSCOPE – Highly visible flashing light for accident scenes or hazard markings

SOS – Standardized emergency signal (3 short/3 long/3 short flashing signals) for emergencies

The GOOLOO GT4000 jump starter for diesel trucks makes reviving the vehicle effortless with its child-friendly 2-stage operation: CONNECT and START.

The GT4000 portable jump starter kit includes a jump starter, heavy-duty jump start cables, a 100W car charger, a USB to Type-C cable, a Type-C to Type-C cable, a cigarette lighter adapter and a convenient storage bag.

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