It lasts half a day, shuts off with charge left, or the battery is swollen.
The battery has lost capacity after years of charge cycles.
A new battery, fresh adhesive and a charge test.
It depends on the model and on what we find inside, so we quote each repair individually. The diagnosis fee depends on the device, and you approve the exact repair price before any repair starts. If it can't be fixed, you only pay the diagnosis.