With a built-in 3,700 mAh battery as well as a built-in micro SD card slot, the Offgrid case looks like it was designed to fill the gap many think Samsung left with the Galaxy S6 when they moved to a new design. We've seen battery cases before, but the twist here is support (via USB OTG) for an SD card of up to 128 GB. Put in your SD card, pop the case on your Galaxy S6, and a flip of a switch changes from charging mode to storage mode.
Yeah, we're interested, too. We ordered one to check out — anyone else?