Snazzy Labs

$40 HP Power Pack vs $20 Amazon Power Bank (2015x47)

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HP Slim Power Pack - http://amzn.to/1fCEv3V OMAKER Battery - http://amzn.to/1NQGAF1 HP just released a power bank battery pack to charge phones, tablets, and the new MacBook-but is it better than any other battery out there?