You may contact Apple Store or look into the online one to see if you can locate
one in the web store. Another source that sometimes is a slightly better price
when they have the correct one(s) in stock is OWC macsales... With a MB/Pro
you should not use the 45w, as that is for the MB/Air & will not work. Depending
on the size of display, if the unit has a DVD optical drive, and other hardware that
may require a large capacity output charger (to run the MB while charging it, too)
then consider the higher output based on the model specifications.
Note there are MagSafe and MagSafe2 adapter versions, so be sure to get the
correct version for your computer, or if needed, get the small convertor plug;
http://store.apple.com/us/product/MD504ZM/A/magsafe-to-magsafe-2-converter
•Find the right power adapter and cord for your Mac notebook - Apple Support
85w MagSafe for MacBook Pro '06-'11 new:
http://eshop.macsales.com/item/Apple/MC556LLA/
60w MagSafe for 13" MacBook Pro '06 - '11 models, new:
http://eshop.macsales.com/item/Apple/MC461LLA/
You can use a higher output adapter than the original when the magsafe type jack
is the same, as the adapter will not generally over-power the computer battery...
http://eshop.macsales.com/shop/specials
http://eshop.macsales.com/shop/powerbook-ibook-macbook/
http://eshop.macsales.com/shop/bargains/
The good thing with a source such as macsales OWC is you can contact them to
be sure the item is correct; you can also check specs to see which adapter is the
correct one if attempting to match the original specs. But some sources may only
have the 85w version. (They also offer a 45w model suited only for the MB /Air.)
The Apple Store has a battery that may be OK, if in stock. Ask local store or
call main Apple 800# and have your product serial number handy. I tried to
get confirmation of Apple part availability -- but the Apple Store (US) times-out.
In any event, hopefully this helps somewhat.
Good luck & happy computing! 🙂