by ericmark »
Wed Aug 24, 2016 2:43 pm
I have had some time to look, and yes it is battery powered, so in theroy it should go up and down around 10 times with no power going to the stair lift. However my mothers beeps at you if not charging when not in use.
I was surprised to find the stair lift not working one day, it seems there is a cut out so once the battery voltage drops it stops working, OK hers is not same make, hers is a Stannah.
I was not impressed with the system, I would have expected a warming lamp or buzzer first to say battery becoming discharged not just stop and require winding back to charging station. It was sudden and my thoughts were the charger must be US, but new batteries and off it went again.
It seems it uses what are called valve regulated lead acid batteries (VRLA) which use a glass mat to hold exactly the right amount of electrolyte, theroy batteries should last for years, but in practice they last around 2 years, longer if used a lot, as it seems the chargers are poor quality and they over charge the batteries.
There are however loads of limit switches, on hers the panels are the trigger plates for the safety switches, do look and see these have stuck.