5 - 30 minutes
Battery was spent. Time for a new one.
YouTube repair video was clear and concise.
Unlike many of the complaints from other sellers, the tools ARE the appropriate ones. They fit. Removal was easy and straightforward.
The whole repair took only 10 minutes.
Thus far the new battery holds a charge and is working well.
Be ware, as is indicated in the video, the old battery may be difficult to free from the adhesive behind. Use caution when prying out the old battery not to damage the adjacent components when leveraging against them.