My Problem
4 years old battery; I need my MBA for à long trip; so I prefered to put à new battery
My Fix
With your guide and tools, it was very easy to replace the battery; only 10 screws to remove, then a few others to remove the battery and I replaced it; nice
My Advice
Take care : screws are very small, it's easy to loose them; put them in a safe place, a magnetic screwdriver is not bad idea
Written