VEVOR - DC to DC Battery Charger, 520W, 40A Alternator Charger, Fast DC-DC Charging for Portable Power Stations

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 GOOLOO GT6000 is a powerful yet compact 6000A lithium jump starter that can start almost all 12V vehicles, including up to 12.0L gas and 12.0L diesel engines, within seconds. It supports 100W two-way fast charging and can be fully charged in about 1.4 hours, with just 7 minutes of charging enough to start a car. It also charges laptops via the Type-C port. Featuring a clear 3.2-inch 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.

This WOLFBOX JS24 car jump starter provides up to 4000A peak current and 24000mAh high capacity. It can safely start gas and diesel engines. Works on all (12 volt) cars, trucks, boats and large vehicles, meanwhile it is very portable. The JS24 battery jump starter works with a smart jumper clip to provide 10 safety protections to ensure safe use. The JS24 car jump starter power supply contains an LED screen that clearly displays all status indicators of the portable car jump starter power supply. You can easily identify the current status of your emergency power source and provide seamless access to all functions. This JS24 car jumper is also equipped with 1*65W Type-C input/output port and 1*QC 3.0 USB-A port, which can save 50 when charging your mobile phone, tablet, Kindle or digital camera 50% time. Tips：A 65W charging plug needs to be purchased separately.