I am seeking recommendations for a portable rechargeable battery pack.


  1. Reliable
  2. Can safely power tablets and phones (only need 2.1A at once)
  3. Can reliably jumpstart a large vehicle engine (4.0L)


  1. As low of a price as possible
  2. As small as possible


  1. Has a carrying case (but not willing to pay extra for one)

Note: Costco currently sells such a device for $59.99, but I have been unable to find any reviews of it, nor do I know anyone who has tried one.

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