GOOLOO GT4000S 74 Wh jump starter battery

The GOOLOO GT4000S is a jump starter power bank with 74 Wh (5000 mAh, 14.8 V), delivering a peak current of 4000 A and a starting current of 800 A to crank the engine. According to the manufacturer, it supports petrol engines up to 12.0 litres and diesel engines up to 10.0 litres, making it suitable for starting a vehicle when its battery is heavily discharged.

The USB-C port with 100 W Power Delivery can charge laptops and other power-hungry devices, while the USB-A ports supply smartphones and accessories. A 150 W DC output extends its use to automotive equipment with higher power requirements. An integrated LED flashlight and a 3.2-inch display show the charge level and operating parameters.

The housing is rated IP65 for protection against dust and water and operates between -20 °C and 60 °C. The package includes jump leads, USB cables, a 100 W car charger, a cigarette lighter adapter and a carry bag. The unit weighs 600 g.