Hey guys, I fully charged my MacBook last night and I used it since this morning using only the battery. Followed the instructions so far.... now I only have 8% battery life left (0:21 remaining) according to the battery indicator. So it should die pretty soon. So once it goes to sleep I have to wait at least 5 hours and then recharge it to full capacity right? After I wait 5 hours of it being asleep, can I recharge while using the MacBook?