Will it start a diesel truck?

Yes. It is rated for diesel engines up to 10L, with 550 starting amps and 1000 peak amps.

Does it have an air compressor?

No. The JNC345 is a jump starter and power bank only; there is no built-in tire inflator.

An LED state-of-charge display on the unit shows the battery level.

The jump starter, a pouch for transport and storage, and a repair service coupon.

Yes, through the dual USB outlets at 2.4A, and there is a 10A DC pinjack for 12V accessories.

It is the best new price among the 5 stores listing it as of November 8, 2026, so it is the low end of what stores currently charge.

5 stores we checked sell it, including Walmart, JBTools.com, eBay, Tractor Supply Company, Auto Tool World.

At Walmart, for $205.84, as of our latest check.

$205.84at WalmartObserved at 8:44 AM

Compared across 5 stores. Prices are checked against each store and labelled with when.

It checks today's price at every store, compares the alternatives and answers in about a minute.