I am not never before doing something like this before, but now i do this battery replacement and it worked very well. Maybe there could be more text describing steps 4 and 6 those were parts were me as complete novice had most difficult to understand at first. Step 4 you should say that you need to open that small lever-thing what locks ribboncables in its place (picture here is accurate, but i did not understand it at first). And step 6 disconnecting actual battery cable were more simple than i first thought, just lifting it upwards and then its basically free already just pull it away. Same connecting new battery cable back is same kind simple, just push it back there but better to do it first time right since that connector loosens easily i think.