Hello!
I have two SCS's (cervical & thoracic) and both batteries were initially placed in each buttock/hip area. I had issues with the thoracic leads and battery (very uncomfortable). So, when they did a revision surgery (changing the leads), they moved the battery to the right front/side area...close to my ribs. It is more comfortable there then in the back. Skin is obvious looser and softer there then in the back so it moves a little bit but it is still more comfortable there then the initial spot it was placed.
Nanc