Battery Problems with Mid 2010 Macbook Pro

[horace528]

I am having some problems with my mid 2010 MBP.
Sometimes, when I am using my laptop, the battery indicator does not go down. It just stays at a percentage (for example, 90%), and just stays there. However, the battery does still drain. (Captain Obvious)
Is this because my MBP is getting old? I don't think that is the reason (Think 2 year old laptops still should have some life kicking). If is this not true, can there be an another reason?

 

[Macman45]

Try resetting the SMC:

http://support.apple.com/kb/ht3964

 

[horace528]

Tried that. Still sometimes messes up.
Will try calibrating my MBP today.