Other than that, the PRS - T3 meets
most of my wishes (lacking only the easily replaceable
battery, color, and a frontlight, though I have the lighted
case, which works fine in a pinch, and needs no additional
battery).
Unlike
most other iPhone
battery cases, this one has no on / off switch - it immediately starts charging as soon as you plug your iPhone into it, and if you swipe down to see your notifications, you'll see how much
battery life your phone has left, as well as the
battery status of the
battery in the
case.