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Bison 80 charging problem
I have a customer with a Bison 80, when I first went to site, the batteries were flat and datum was lost.
​I removed the batteries, charged them, replaced them and reset the datum and the lift worked fine but wouldn’t charge.
With a new power supply fitted it still wouldn’t charge and the power supply voltage was dropping to 15v. It was trying to charge with some very random 100ma or so spikes.
I assumed a fault on the charging circuit on the board so took the board to a repairer who couldn’t find anything wrong – not that he could fix at least.
With a new board being very expensive, can I replace the power supply with a proper 24v NiCad charger and connect directly to the battery terminals inside the stairlift- via the charge points.
I am worried that the stairlift uses the 33v power supply to reset datum and that the stairlift might get lost all the time. Also I am not sure if the charger might feed back into the board and cause a problem.
Any advice would be appreciated.
Thanks
Mike
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