I have received a High Battery Voltage fault on my Permobil C500 wheelchair several times.
The typical situation is that I charge the wheelchair fully. I then take the wheelchair in my van to our local gondola and ride the gondola to the top of the mountain.
I then descend over 2,000 feet vertical on various trails covering a distance of around 7 miles.
There is a very small amount of up and down as I make my way down the mountain. After about 2 or 3 miles of riding, the wheelchair will come to an abrupt halt and display the High Battery Voltage fault code.
Cycling the power clears the code, but it return very quickly unless I ride the wheelchair uphill for a bit.
The permobil documentation states this fault will arise if it detects the battery voltage has risen above 35 volts.
Permobil's suggested corrective action is to check the charge level and conditions of the batteries, ensure the connections between the batteries and the control system are tight and not damaged, and ensure the connection between the batteries and circuit breaker/main fuse are tight and not damaged.
I suspect that the sustained downhill riding with the motors acting as generators and producing energy to charge the batteries is likely a contributor to this problem.
I would appreciate it if you could share your thoughts about what is going on and potential ways to remedy it.
Thanks
Steve