20 - 30 Minuten
Kept receiving "Charging is not supported with this accessory, regardless of cable, charging device, etc. Tried cleaning connectors...nothing worked. Battery still charged, but very slow. Eventually the battery would only last 3 to 4 hours.
I orderd a new one from ifixit and it was here in LESS time than promised. Install was a breeze with tools and tutorials online.
Still have the error, but battery is charging well and holds charge.
Take your time. Space is at a premium inside of an iPhone. Read through the repair process completely before starting. Then read through each section twice as you progress.