Hi Stuart, thanks for the quick consideration of my issues. I do recognise that you don’t have to, and aprechiate the effort you’ve put into all versions of your BMS, making it available to us, and providing support.
I’ve had 7s pack (just 1P) during testing. I wonder if that’s potentially the cause?
I charged the 7s pack and left it all plugged in for a day or so. Andafter that I started to take some mha from the pack (down to 4.0V). That’s when it started locking up.
I then left the pack alone, connected to the BMS’ and controller, feeding data to the database. I did this for 2-3 weeks. Randomly BMS’ would lock up.
A few days ago, I removed the last BMS to reduce the Pack to a 6S pack (Still waiting for a charger to arrive that will cope with 7s.
Once down to 6s, I started charging, and noticed the BMS balancing, and not locking up. It did lock up only once during charging. I did a small discharge and don’t recall a lock up, but I only discharged for a few hours, and at a very low current.
Once charged closer to full (About 4.1V per Series). I left the pack alone for a while. I was getting lock up’s as usual.
Generally I find that it’s the first 3 BMS’ that lock up. Be it one or two. Never more then 2. Less often it’s cell 5 or 6.
I cannot tell you or a definite way to get it to lock up.
Note that I’ve used the pre compiled code. I work in IT, and wasn’t able to work my way thru the ‘manual’ way to upload it. I will admit that I didn’t break by arse to compile the code as there was precompiled code available.
This generates a question. Is the pre-compiled code an older version then the code that requires compiling? Maybe I should bite the bullet and work out how to do it with the un-complied code… Problem is I have no idea where to start, and cannot find an idiots guide.
Thanks.
Simon