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The Boost X GBX155 jump starter delivers 4250A peak current for starting 10.0L gasoline and 8.0L diesel engines, combining strong performance with portability for emergency roadside use.
It features a one-button start, a high-definition LCD display showing battery level and fault indicators, and a built-in LED flashlight with constant, strobe, and SOS modes. The unit recharges in 1.8 hours via USB-C Power Delivery and can provide a jump start after just 5 minutes of charging. It also functions as a 60-watt power bank for charging phones, tablets, and laptops.
Package includes the GBX155 jump starter, heavy-duty clamps, USB-C charging cable, and a microfiber storage bag.
Reviews imported from our previous store / verified customer feedback
Honestly, this jump pack is legit! My old SUV's battery died in the grocery store parking lot, and this 4250A fired up the 5.7L gas engine instantly. Super easy to use, just connect and go. Definitely recommend for anyone with an older vehicle.
I was surprised how small this thing is, yet it can jump a big diesel. It fits right under my truck seat, taking up barely any space. The 'American Standard' option works perfectly for charging it at home. Such a solid backup for long road trips.
Having this portable jump starter on hand is a huge relief. I drive a heavy-duty truck, and knowing this 4250A can handle an 8L diesel engine makes me feel a lot safer. It's well-built, and the price for this kind of power is fantastic. Worth every penny.
