20 - 30 minutos
Terrible battery life. Battery end-of-life approaching.
Repair went very well. Not difficult to do with the right tools. Possible to do with the tools that come with the battery. Tool quality is good (the magnetic screwdriver is very handy with the small screws!!!)
Draw boxes on a piece of paper with labels for the screws (where they came from).
Initial few charges of a new battery are usually terrible. Gets quite a bit better after 10-20 charges, just like original battery)