As one of its daily deals, Kmart offers the Plus Start Portable Power 500 Emergency Power / Jumpstarter
, model no. 71489, for $23.99. Coupon code "OFFERS10" drops it to $21.59
. Opt for in-store pickup
to dodge the $11.79 shipping charge. That's $18 off and the best price we've seen for a 500-amp jumpstarter. Sales tax is added where applicable. It features a 500-amp peak, spark proof jumper clips, and battery status gauge. It's for use in vehicles with 12-volt electrical systems. Deal ends today.