alt Hacker NewsI was curious so looked at a few power wheelchairs...It's wild how expensive they are, especially considering the advancements in electric mobility tech elsewhere. You'd think they'd share some components with e-scooters, e-bikes, or even electric cars – motors, batteries, controllers.
Are the powertrains and control systems in power wheelchairs really that specialised? Or is it another case of the medical device markup and regulatory hurdles driving up costs?
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Assistive technology costs are high because consumers barely have an alternative. I am blind. In Europe, a 40-cell braille display starts a 6k. 6k, just for a monitor which displays 40 characters. Prices are largely unchanged since 20 years. Technological advancements are irrelevant. Resellers will squeeze the cow, thats plain capitalism man.
I suspect a major difference is that those e-scooters, bikes, cars, etc are produced and sold by the millions, whereas wheelchairs are small volume by comparison. Another commenter mentioned the legal requirements, which complicates things.
That said, a quick google says there's 65-132 million wheelchair users worldwide so it's not a small market either.
I think a significant portion of the cost is related to the "medical device" label.
It's impressive and a little sad how cheap you can get them second hand.
I'm a guy who has disassembled and reverse engineered a standard Jazzy power chair, and what I noticed was the attention to detail regarding failures. The chair is thoroughly designed to shut down at the slightest bit of trouble. There's some redundancy in things like the controller, where it used redundant hall effect sensors that were identical to the others, but ran in an inverted power profile, to detect any weirdness in the sensor outputs.
I ended up adding a long range remote control to it. A remote control power chair is fun to drive around. People do get a little concerned when they see a chair rolling around without a driver