We may have found other answers which could help you.
Click here for 420 Stairlift BatteriesHow to stop the 'beeping?
How can I mend my Stannah 260 stairlift no green light on?
How can i find?
where is the winding handle housed when not in use on a stannah stair lift?
Stannah 420 batteries?
how can i fix my moms stannah 420 stairlift?