Portable Jump Starter | $30 | Walmart
Graphic: Shep McAllister
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Update: The one we posted yesterday went up to $40, but Walmart has a different model down to $30 today.

You don’t think you need a portable car jump starter until you suddenly really, really need a portable car jump starter. This one’s only $30 from Walmart today, which is one of the best prices we’ve ever seen on one of these, and at 600A, has enough juice to crank most engines.