Schumacher IP-55 Instant Power Portable Jump Starter

• 400 Peak Amps of instant power with a 5Ah internal battery
• Sure-grip clamps fit both top and side-mount batteries
• Battery Status LEDs tell you when the battery is charged or needs to be charged
• Maintenance-free, sealed, lead-acid battery allows for storage in any position
• Compact, durable and corrosion proof polypropylene case

You can't tell from the pictures just how small this unit is. Mine also had a 50% charge upon receipt and did not take long to fully charge. I was looking for a jump starter that I could keep in my car for emergency situations. My previous jump starter was too large and I wasn't able to keep it in my car without it getting in the way. This one is small enough that I will be able to keep it in the trunk at all times. I am also looking foreword to using the 12V charger on our next camping trip. For the price I think this is a great buy.

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Seems well made and for the price you can't beat it. Mine came with 1/2 charge but charged up quickly after plugging it in for 30 minutes. Read the manual. You have to recharge every 30 days to maintain a full charge. That is normal for these portable chargers.

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The battery clips on this are made from extremely brittle plastic. The red clip on mine broke on the second time I tried to use it on a battery. If you plan to rely on this in emergency situations, get yourself something more durable than this flimsy unit.

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Overall effective battery backup maintains charge well. Have only used once but did the job as expected and without problems.

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Brand new, it didn't work at all. The electronics were completely dead -this has nothing to do with its internal battery being shipped either charged or not. I cannot figure out how this could happen unless the manufacturer failed to functionally test the unit before shipping and, if they did, that indicates the kind of company that puts the burden on the buyer to perform their pre-ship testing for them. Since I'm an electronics engineer, I tore the unit down out of curiosity to find the problem: It was a cracked diode, probably due to current or thermal overstress.