In article , rickman
wrote:

The only test I really care about is running the phone the way it did when
new. If it doesn't do that the diagnostic test is pointless.

it's not a pointless test.

there's a big difference between a battery that's at 95% capacity after
a year (well within normal range) versus one that's at 60% capacity in
the same time frame, or has swollen or some other defect.

A diagnostic is used to catch eminent failures or batteries that are
degrading faster than expected. It is not the criteria for replacing a
battery. If the battery won't operate the phone as the phone was intended
to be operated, it doesn't matter what the diagnostic says.

yes it does matter what the diagnostic says. that's why it's called a
diagnostic.

and the battery is *not* degrading faster than expected either.