iPhone 4 battery case (Third Rail Mobility System)

Credit  goes to YouTube reviewer Larry Greenberg for the following video, in which he reviews the Third Rail Mobility System – an iPhone 4 case with a removable battery.

The Third Rail Mobility system differs from other “back-up” cases, such as the Mophie Juice Pack Air, because the battery element is detachable, allowing for a slimmer overall case design.

For the time being the Third Rail Mobility System is available on Amazon. Supplies are limited!

Published by Adam Arnold

Adam Arnold is a 20(ish), father & founder of the Smarter Group; a member of CTVF500; Entrepreneur in Residence @ Wolves Uni; SPEED+ Mentor & an #sbs winner.

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1 Comment

  1. I have this case. It was quite expensive but so are most of the competitors, like the Mophie that you mention.

    I ended up spending over $100 on the case and spare batteries. It does, however, mean I’ve never been stuck with a flat iPhone!

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