Was skeptical, but now a believer in iFixit

Sorunum

Battery would get to 40% and then just drop to 1% or die.

Tamirim

Replaced the battery. Read the repair guide through before I began. Then when I started just followed each step and it worked perfectly.

Önerim

I purchased the tool kit along with the replacement battery. When removing the screws securing the front panel assembly cable bracket to the logic board, I found a good way to make sure to keep track of which screw was which by labeling the slots on the tool carton with the screw size (and color from repair guide) and putting the corresponding screw in the slot. (See photo) There may be an easier way to keep track but this seemed easiest way for me.