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The Gooloo 4000A is a lithium jump starter pack rated at 4000 peak amps, aimed at cars, trucks and larger engines that smaller packs struggle to crank. It adds USB quick charge and a USB-C port, so it doubles as a power bank for phones and tablets. Against rival packs in its class, the headline is the high amp rating and the fast-charging outputs; the trade-offs are bulk, weight and the fact that peak amps are a marketing figure, not a guarantee for every engine. It suits drivers of big-engine vehicles and anyone who wants one pack for both jump starts and device charging.
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Lowest price we've seen: $79.99 on Nov 15 at Amazon. Tracked across 1 store since Nov 15.
The Gooloo Portable Jump Starter is a 4000A unit for giving a car battery a jump start. It is portable, so it can be used away from home.
It also has a USB quick charge port and a Type C port.
