Anyone know a fix to this? Not sure what could be causing it... it's just kind of annoying having to go and manually reset the date and time every time my laptop dies
Not sure which MBP you have, but it sounds like the PRAM battery is dead.
No disrespect nor insubordination intended, but the best solution to your problem is to not let your laptop battery die.
I do believe that it came with a charging cable etc. Proper and timely use of this equipment (such as when you are asleep) will prevent the battery from dying. Problem solved.
This is normal.