I have a Macbook Pro with extra batteries. I am a student and I need to carry my MBP around... sometimes with my extra batteries for places without power. However from my experience, just putting the battery into the bag with no protection dents the battery and deforms it on the edges. (I have a Timbuk2 messenger laptop bag) So my question is, is there a case, pouch, or a sleeve out there that can hold just my batteries to protect them? Please let me know! Thanks!