Mine is a mid-2009 13" MBP closing in to 3 years of age, with original battery (just crossed 600 cycles), swapped the 160GB hd with a 128GB Samsung ssd and infl

Mine is a mid-2009 13" MBP closing in to 3 years of age, with original battery (just crossed 600 cycles), swapped the 160GB hd with a 128GB Samsung ssd and inflated 2GB ram to 8GB, then down to 4GB because I did not use them and they were cheap RAM, so killing the battery (very noticeable on sleep) while the 4GB come from my iMac. I could have had those upgrades from the start (and not have to hack TRIM support on each upgrade) save from the money I simply did not have at the time I bought it.