Hello .. thanks for the welcome to this board. Am an independent stairlift, mobility scooter, wheelchair repair and battery replacement guy in Metro Vancouver, BC, Canada, with video tele-conferencing Acorn 180 re-programming service experience, for clients anywhere in the world via Zoom app. Have more instrumentation than most labs.
Mobile (604) five one two – 9567.

* There is usually more than one problem, or puzzle, with every stairlift repair job or battery swap. One un-repairable stairlift was caused by sibling in-fighting, lol. In another instance, a clever stairlift owner wanted a maintenance contract from me that Acorn would not provide — he probably knew the grinding noise was indicative of imminent (expensive) roller failure.

Saved several clients from electrical fires and lead-poisoning, as shown on some of my approximately 50 “repair diary” videos online. Furthermore, in Canada, insurance companies deny fire claims on any reason or suspicion; I worked with the plaintiiffs’ lawyer in the famous Whiten v Pilot Insurance case. Also assisted with the lead-poisoning miniblinds cases on the front page of Wall Street Journal and on TV evening news, so am cautious with battery replacements.

I like assisting (Cdn.$75/hour by Zoom), smart DIY stairlift clients, often in distant cities, who constructed stairlifts from used Acorn curved 180 chair lifts that they got for free, or nearly-free; thereby saving money, and the environment.

My fingers nearly got amputated by a faulty Miniv**** chassis mechanism.

Funny one:   After a battery swap, the Acorn 120 still did not work.  Found dried samosa sauce in a footrest sensor.  The client lied, said it had no error codes prior.  His honest nephew said it was broken prior,  cuz they used the 120 as a dumbwaiter for their food making business, to avoid germs from customers’ physical contact.