While you wait for answers, we may have found some information which could help you.
Click here for Replace Battery BraunBatteries for Braun shaver 5614?
How to replace Braun Trimmer in Series 7 790cc?
Replacement battery for Braun 5502 shaver?
how can I fix Braun 5614 long hair trimmer?
How to replace battery to a Braun silk epil lady shaver?
Braun 5550 Shaver Battery?