We did run a battery test with DX to ensure there were no differences in battery performance between the two cases. In our testing of Meridian, it was able to provide a 99% recharge to a fully depleted iPhone 5. Under the same conditions, DX actually provided 105%. Although somewhat higher, the results are certainly in the same ballpark; it’s impossible to tell if there is more advanced circuitry, or the conditions were just a bit different.…