21 Oct 18 Well after a lot of hand wringing I finally decided to buy a brand new MBP to replace my late 2011 laptop that had a bad GPU. It's a 2017 15" with touch bar model # MPTT2LL/A. It arrived on Friday and I got to work setting it up Saturday morning. The battery low warning came up so I plugged it in to recharge the battery. It's at 100% now. This model does not allow for a battery replacement without taking it to a certified service center. Oh well. So I do not want to risk damaging the battery. My question is: After the battery is fully charged, should I disconnect the charging cable from the Type C port and just run on battery power until it needs to be recharged again or should I just leave it plugged in and use it that way. Will this damage the battery? There is nothing in any of the guides I can find including the "MBP Essentials" that I down loaded in "Books". I'd appreciate any and all tips and clues you can give me.. Keats Phoenix Az.