[Ryobi battery riding lawn mower]

12 minutes ago, jamis said:

I can't explain the sudden backing up issue.  Are you sure you didn't hit the F-N-R switch by accident reaching for the deck motor switch?  Did the mower beep when the deck motors shut down?  The system can be a bit flakey.  I recently ran my 34 month old RM480e down to a flashing red bar and a solid red bar while mowing.  No beeping and the deck motors kept running.  I shut the deck motors off and drove the 500+ feet back to the charger.  The pack voltage was 47.2 volts.  I simply don't trust the factory instrumentation and record usage with a spreadsheet.

Yes, the mower beeps when the deck shuts down, it lurches to a stop and then begins to back up if I keep my foot on the accelerator and continues beeping as it does in reverse mode. I have learned to let off the accelerator and press on the brake when the deck motors stop. I know I haven't accidentally pressed the button because this happened more than once and it happens when I am still steering with both hands.

[Ryobi battery riding lawn mower]

I have the 75ah RM480e and notice that when it gets to a low charge (about 1/3 left on the battery indicator) the blades will stop. It will sometimes begin backing up at the same time if my foot is still on the accelerator. Is this normal or is this an issue to addres?

 

Also, I plan on checking the batteries, but was wondering if the controller prevents the mower from ever getting below a certain percentage, shouldn't I be able to keep mowing even when the indicator is way down at nearly empty, not with a 1/3 left? I have a 1/2 acre to mow and for the past two years could mow it all no issue, but this year, I get only about 90% done before the blades stop.