I use a desktop touchscreen computer (HP) in one room and tablet laptop (Toshiba)in the other (although I don't use the pen function that much on the tablet). Both connect wirelessly to the server. When I switch rooms I plug my laptop in on my desk and it charges for 15-25 mins while I'm in the other room. (My office is right across the hall from my exam rooms so the walk is short) As long as I start the day with a charge > 60% I get through the whole day on the laptop. Many times I end the day with almost a full charge. (I lock the laptop at night so it doesn't get the opportunity to charge overnight). Consider buying an extra AC adapter (and small surge protector) and plugging in while in the exam room. (By the way, my battery life is 3-4 hours when doing clinic work and using AC.)
