I fully discharged battery, manually stopped discharge (3-4 amps) at 10.2 volts because BMS did NOT. Charged battery back up with Victron 30amp smart charger, went to 100 % this time! Now discharging 2nd time to 0%, but will keep watch on voltage, now knowing BMS did NOT shut down and will stop discharge at 10.5 volts, what the BMS is "supposed" to do. Then I will charge to 100% for second full charge and then discharge 2nd time, and the SOC should be calibrated. After that I do NOT ever plan to discharge to 0% or charge to 100% regularly. My system should never discharge very low unless there is a big problem, I will use very little in the summer, as my 4.4kw solar system with 1480 amp hours FLA, L-16RE-B, Trojan batteries is floating by noon on a sunny summer day. Will update...