Hello I shopping around for my first ipad, looking on ebay. My main concern is with battery life, am looking for an ipad 4 which is an aging model now, and don't want a tablet with a fatigued battery. I have noticed some ipads are manufacture refurbished which I believe means new batteries too. However some listings just say the screen was smashed and tablet sent for and repaired by apple - fir warranty repairs is it s different process to refurbishment? Or in those cases does apple just strictly fix the screen? Cheers