New battery old woes

Hello all,

I just installed a new battery in my 4s after it was only holding a charge for half a day (suddenly) two weeks ago.

The installation went great (thanks, ifixit), but I'm at 38% four hours into my workday again today already. Evidently, the battery was not the problem, but my settings, usage, and location have not changed.

Any ideas?

Thank you.

ZLM