Right-Handed iPhone 4/5 + "lipstick" battery "Ingress Pack"

I intended the original, http://www.thingiverse.com/thing:822853, to be held in the left hand, using the right hand to operate the phone, however the battery side (with the hand strap) had to clip to the right side of the phone to avoid pressing the volume buttons, so it was really left-handed (hold phone in right hand, operate it with left)...

So, I redesigned the part to have the battery holder on the other side, so it could be clipped to the phone with the battery on the left (back) side o