15 - 30 minutos
Battery on my 3 yr old MacBook Pro no longer could take a charge reliably. Didn't want to take my laptop in and leave it at the store, so decided to replace it myself after reading ifixit.
Easy repair. Took 15 minutes and five of those minutes was dealing with my cat who kept jumping on the table.
Make sure to have the right tools. Now I wish I'd also upgraded my hard drive while I had the laptop open. Oh well, will do another time. Great site.
P6 Pentalobe Screwdriver 2009 15" MacBook Pro Battery
MacBook Pro 15" Unibody (Mid 2009-Mid 2010) Replacement Battery