My Macbook Pro ran out of battery last night and wouldn't turn back on even when connected to power for a period of time. However, when I woke up, it did turn on. Is there a reason this happened and should I get it looked at?

Last night, I was watching something on my Macbook Pro and it died (out of battery). I went to plug it in and waited a couple of minutes to try and start it back up. However, when I connected the power source the light was green, which could not have been the case since I know 100% it was out of battery. I proceeded to hold the start button for a long period of time, but my computer made no noise and refused to turn on - it looked like for all intensive purposes it was dead. I left it alone overnight praying that it would be alright in the morning and luckily, when I opened the computer this morning it was restarted and fine. I'm concerned because I've had this happen to me a couple of times and while it always turns back on, I feel like there is a bigger issue that I need to get addressed. Can anyone help me with this? Any ideas? Thank you!

Apple Does Not recommend that. Please Read.
http://support.apple.com/kb/HT1490
From that article
"Portables with built-in batteries"
Current Apple portable computer batteries are pre-calibrated and do not require the calibration procedure outlined in this article. These computers use batteries that should be replaced only by an Apple Authorized Service Provider.
MacBook 
MacBook (13-inch, Late 2009) and later
MacBook Air
MacBook Air (all models)
MacBook Pro
MacBook Pro with Retina display (all models)
MacBook Pro (13-inch, Mid 2009) and later
MacBook Pro (15-inch, Mid 2009) and later
MacBook Pro (17-inch, Early 2009) and later
Thanks.
Allan Mac wrote:
Apple recommend calibrating the battery when you buy a new Macbook and then every few months, or monthly if it used on mains all the time. This, as Apple says is to keep the battery operating at maximum efficiency. When the battery discharges and shuts the macbook down, it still has reserve power for a good number of hours. There is also a logic board battery to hold various settings.
I rather think I will take Apples advice on using their equipment not yours, but I would be intrigued to discover what is it you know that Apple doesnt about its batteries?
Allan

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