5 - 30 分钟
My phone wasn't holding a charge. The battery was depleting rapidly. I called the MAC store and the wanted $125 to replace the battery.
I visited iFixit's site, saw that the repair was pretty straightforward and that you could sell me the batteries and the tools I needed for $25 -- significantly less than I was quoted anywhere else! I did the repair myself and it was very easy.
I don't have any advice. The video and descriptions were great! Love iFixit!