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3-in-1 Jump-Start/Air Compressor/Power Supply - 39954 view this item at harborfreight.com »


Ratings: (5 is best)

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Review by Bigplanz on October 28th, 2014
I got this because I had a dodgy battery that let me down in the parking garage one day. Couldn't find anyone to give me a jump, even though I keep jumper cables in the van. After I replaced my battery, I bought this for $37, on sale, with a 20% off coupon. It is a very basic jump-starter, and be advised it DOES NOT have an air compressor. That model is more expensive. Mine just has a little light, a 12V power port and a battery booster. Calling this a jump starter is a bit misleading. When fully charged, it has about 13V available power. When you use it, you hook it up to the discharged battery, then let it charge it for 5 minutes. You have to let the booster bring the battery up to a charge where it will start the car. Don't try to start it off just the jump-starter!

I have used it, as directed, on car that wouldn't start because the lights were left on, and it worked fine. Car turned right over, and the lady stranded in the mall parking lot was on her way. (She gave me $10, too, even though I didn't ask her for anything. Gotta love beer money!!) I don't know how well it would do with a deeply discharged battery, but it is worth having in the van.

If you get it on sale with a coupon, it's an excellent buy. Regular price, eh, not so much. Wait for it to be priced right, then pick one up. It's light, easy to use, and got the lady I helped out of a pinch. Put it on the charger every 6 weeks or so, to make sure it is topped off, and recharge after every jump.

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