While you wait for answers, we may have found some information which could help you.
Click here for Replace Battery BraunHow to replace Braun Trimmer in Series 7 790cc?
Replacement battery for Braun 5502 shaver?
Batteries for Braun shaver 5614?
How to replace battery to a Braun silk epil lady shaver?
Braun 5567U Electric Razor?
Braun 5550 Shaver Battery?