followed the guides with no problem
5 - 10 minutes
battery was dead and magsafe board failed
everything was great, i had 1 screw stripped from a previous repair but it wasn't too much of an issue and i broke 1 speaker connector , but that speaker was already blown and will be replaced once i can afford it.
be very gentle with the speaker connectors, they really are delicate.
Tri-point Y1 Screwdriver
MacBook Unibody (A1342) MagSafe DC-In Board
MacBook Unibody (A1342 Late 2009-Mid 2010) Replacement Battery