NPower Powerpack Emergency Power Source with Air Compressor - 500 Amps, 400 Watts

I've owned this unit now for about 3months & very happy in making purchase. First off, the power generator is absolutely quiet, unlike other powerpackswhich makes machine drilling noises. Second, the usb power source is very useful when needing charging of USB accessories. Now the few complaints are, Laptop computers are not recommended for charging. Laptops in general, draw a lot of recharging power40minutes of charging will literaly drain a fully charged powerpack source. Lastly the air inflator is not that good, even for an average, may take a while to inflate those tires. Jumpster works perfectly & recharing is done effortless.

I have bought three of these gems. The first was bought as a gift, when I got to examine it I had to have one for myself. They have gotten me out of several jams already, flat or low tires, dead or low batteries, have even used them to operate power windows after the door switch failed. I keep one in each of my trucks and don't go anywhere without one with me. The powerpack is well made and designed, they make appreciated gifts. All of mine were shipped from Northern Tool through Amazon. You have to recharge the unit every 3 months or so as the charge will run down.

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Seems to be identical to the Cobra brand unit. Blue plastic instead of yellow and at a higher price. Worth considering which one to purchase.

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I went and bought this powerpack for my father, seeing as though it would be a reliable product.( my sister's car would occasionally need a jump start along with the compressor and usb charger) we bought it in July, only fully charged it once. It was still nearly full but then Hurricane Sandy starts up. We use up all the battery for powering whatever was crucial. Here's the kicker, tried to charge it again once power was restored. left it plugged in for about 6 hours. still reading empty. We went over to the ac adapter. it's uncomfortably warm to the touch and that's never good. tried another couple of hours, still nothing. Extremely dissapointed.

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Arrived quickly and in perfect shape. Charged up as expected. During a power outage, it powered a single lamp for about three hours, then made "running low" warning sounds. So it worked for a small load for a short time. I was surprised it ran low so quickly. But haven't tried to jumpstart a car battery, which is its main purpose, I suppose.