So, last night I used my MacBook off the charger (not unusual, I commonly charge it during the day, then use it on the battery in the evening/at night.) It ended up down to about 23% battery life. I shut it down normally, with no issues or anything, and went to bed. This morning, I simply plugged it in to charge. I didn't turn it on or anything, just plugged it in. I went and got coffee and did some stuff, then came back to do some coding and check my mail. The light on the magsafe charger was green, and I thought that was odd, as it had only been plugged in for about an hour and a half. I turned it on, and the battery icon was showing that it was plugged in, but not charging. I restarted it, and it began charging normally. However, it's reading something like 9 hours until full, and 27%. Is that normal, or should I be worried? I've never checked the time remaining, so I don't know if 9 hours is normal, or if the counter is simply wrong. Usually it's charged while off, or in sleep mode and only takes a couple hours. The MacBook was bought as a refurb from Apple about 3 months ago.