Some negative news, the 30/24 pack gave me a scare yesterday.
I was chugging along the highway at 60mph (dash showed '--' miles remaining, '---' % SOC), and I estimated real SOC to be 25% left (3.5V min cell voltage). I tried to pass a car, and it triggered turtle! This should not have happened until 3.1V min cell voltage, but I guess momentarily at high amp draw the min voltage will go quite low.
So, I continued on the highway for 8 miles while in turtle. Not fun. So I guess this will be added on the to-do list. Maybe a restart of the car would have brought it out of turtle?
On a positive side, this explains some of the mails I've received. For instance, there was a guy in Poland whose company did a 40/24 bruteforce upgrade, and they got turtle after 140km traveled on the first testrun. They must have experienced the same thing, premature turtle due to voltage drop under high load, and they called the upgrade a failure. Except it's not a failure, it's just the way these batteries work with a 24 BMS...