We're no strangers to USB battery packs, I haven't seen many that will jump a dead car battery. In addition to a 7500mAh USB charger, this highly-rated Cobra JumPack comes with a set of detachable jumper cable clamps that deliver 400 peak amps to your dead car battery.
Best Buy has it for $80 today, which seems a little steep, but will feel like a bargain next time you're stuck in a parking lot. [ Cobra 7,500 mAh Portable Jump-Starter / 2.1 Amp USB Battery Pack, $80]
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