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The GOOLOO GP4000 is a 12V lithium-polymer jump starter rated at 4000A peak, built to start gasoline and diesel engines up to 10.0L. It adds dual USB outputs (one fast-charge), a USB-C port for charging phones and the pack itself, and a BOOST button that forces a start when battery voltage is too low. It suits drivers of trucks, RVs, tractors and boats who want a single pack for big engines plus phone charging. Against smaller 1000–2000A rivals it trades size and weight for headroom on large diesel engines; owners of big-engine vehicles tend to value that, while compact-car owners may find it more than they need.
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This portable lithium polymer jump starter delivers a 4000 amp peak output at 12 volts. It can start gasoline engines and diesel engines up to 10.0L. That includes cars, motorcycles, pickup trucks, RVs, tractors, trucks, cargo vans, ATVs, snowmobiles and yachts. If the battery voltage is too low, the BOOST button forces the vehicle to restart. A full charge can jump start most vehicles over 60 times.
The smart jumper cable has all-metal clamps. The unit has 10 types of protection, including spark-less protection, reverse polarity protection and anti-reverse connection protection. Hardened plastic and rubber corners help it withstand drops. A smart chip supports ignition in temperatures from -4°F to 140°F.
It also works as a power bank. Dual USB ports (one supports fast charging) and a USB Type-C port (5V/3A) charge phones, tablets, cameras, GPS systems and other devices. A 15V 10A output port can power auto devices such as an air compressor, car fridge or car vacuum cleaner. The built-in LED flashlight has Normal, Strobe and SOS modes and runs for more than 96 hours continuously.
