How to choose an external battery?

Discussion in 'MacBook Pro' started by fessen, Aug 8, 2016.

  1. fessen macrumors member

    Joined:
    May 4, 2011
    #1
    I am looking for a backup battery (or batteries) to keep a MBP running when utility line power is unavailable.

    Anyone know of good posts/threads here or elsewhere covering the major considerations for making a purchase? For example, how to estimate how long a given battery, based on its advertised specs, should be able to keep a laptop powered, or how many times it should be able to recharge a laptop's internal battery (if that's even possible) on a single charge of the external battery.

    (Yes, I know how to use search engines. Hoping for some suggestions from people who have already weeded through the useless stuff and have found worthwhile sources.)
     
  2. Johbremat macrumors regular

    Joined:
    Feb 8, 2011
    #2
    HyperJuice are the only one I'm aware of.

    Been considering the 100WH v2 model for some time now, but the need for the Magic Box is a pain.
     

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