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Car batteries are very similar to smartphone batteries. They both die on you when you need them to work the most. Now you can get to work on time and make that important call with the Jumpr from Juno Power. Its essentially a lightweight, portable 6000mAh portable battery that can not only recharge your smartphone multiple times over, it also produces a 12 volt output at a peak of 300 amps—Rendering it powerful enough to jumpstart most any four or six-cylinder engine that’s crapped out on you. Leaving your headlights on all night just became less of a crisis the next morning.

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