John in CR wrote:
.... so it's really down to the LVC being too high or the BMS doing it's job, but since the controller is the new part of the equation my money's on the LVC. The alternative is a bad cell or BMS, so we're all pulling for the LVC, which you can check with a few different LVC settings before even setting out.
At least you picked up some extra exercise today. Your pedal bike has probably been feeling neglected. I almost glad I don't have one.
I am pretty confident the shut down issue is either:
- bad cell
- LVC settings, either CA or controller
- Bad BMS
In order to address each of these:
- will be checking the "top charge" of all cells when I get home today
- I have already set the CA and controller LVC's lower than the BMS LVC of 48 Volts
- If the above two yeild no conclusions, then I am going to lean on Paul (cell man) for the proper steps in diagnosing the BMS.
Just FYI, I remembered vaguely some discussions on the stealth thread regarding issues with pack capacity, particularly not recognizing the range that should be available with the pack sizes. I looked over the thread last night ; in one instance it was in fact a bad cell. In another instance it was a bad BMS. The way the bad BMS was diagnosed was by taking a voltage reading off the battery leads and charge leads. if the weren't the same, the BMS was bad.
With my pack, on a full
charge, the BMS yeilds the same voltage, battery leads and charge leads.
Tomorrow, after after operation Pedal my 120 pound bike home is underway, if the problem continues, I will then take a voltage reading on the charger and battery leads.
By the way, I have been pedaling my pedal - only bicycles much more this year than I have in the past several. About 15 pounds lighter than I was a this time last year.
Damn e-bike just isn't fully dialed yet.....