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The GOOLOO GP4000 is a 12V lithium jump starter rated at 4000A peak, built for diesel engines up to 10L and all gas engines, with a claimed 60+ starts per charge. It adds reverse-polarity protection, a three-mode LED light (flashlight, strobe, SOS) and USB-C recharging in about 5 hours. It suits drivers of trucks, semis and large diesel vehicles who want a compact emergency booster, and it is bundled with the GT160 dual tire inflator for airing up tires from the same kit. Compared with smaller 1000–2000A boosters, it trades extra bulk and weight for far more cranking power on big engines.
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Lowest price we've seen: $38.40 on Nov 15 at Arga Shorea Nest. Tracked across 8 stores since Nov 15.
Owners of large diesel trucks and semis generally report the GP4000 starts big engines that smaller boosters cannot, and they like the built-in light and the inflator bundle. Complaints center on the missing wall charger and the unit's size and weight.
The GOOLOO GP4000 is a portable 12V jump starter with 4000A peak power. It is made to start dead batteries in gas engines and in diesel trucks up to 10L. A full charge provides 60+ starts.
Reverse polarity protection guards against incorrect clamp connections during a jump. A built-in LED light has flashlight, strobe and SOS modes for emergencies.
The jump starter recharges in about 5 hours through its USB-C port with a wall charger, which is not included. It also recharges in about 5 hours from a car's 12V outlet.
