[Ryobi battery riding lawn mower]

I spoke with someone at Ryobi and they suggested I take it to a repair center.  He suggested that one of the controllers might be bad, but I am going to do the battery load test that you have suggested in previous posts.  I suspect it is probably battery related.  Now that we've had a lot of rain, I'll have lots of opportunities to test it out.  Luckily, the repair shop is only a few miles away, so not too big of a deal if I need to take it in.  

[Ryobi battery riding lawn mower]

Hi, I have recently been following this thread as I have a the 100Ahr riding mower which I purchased in 2020.  The run time seemed adequate last year, but starting this year the run time is noticeably shorter.  I kept it plugged in all winter long and it's always plugged in when not in use.  I did a pre-mow voltage check a few weeks ago and it was 51.6v.  I mowed until the blades shut off and the post-mow voltage was 49.4v (3 bars left) at which point I drove back to charge it up.  I was able to charge it back up to 100% (voltage was +52v) in about an hour.  Shouldn't the run time be longer if my ending voltage that high still?  Would this be a problem with one of the batteries, or some other problem?  

 

Thanks