Installed the new 4.0 software. Very nice that cell resistance is included.
At 135A load, cell resistance is 0.4, 0.3, 0.3, 0.3 mOhm, for a total of 1.3 mOhm.
Here's a plot of charging for about an hour at 5 A, then space heater load is applied at 85A, followed by space heater at 135A.
AH axis is on the right side and current on the left side.
Battery capacity is 180Ah.
The BMS is the primary OVD. It is set at 3.48V with a reset at 3.36V. Charging is terminated after 60 minutes of solar at 5A. In the previous software version I would see oscillations as charging turns on and off. This problem appears to be corrected. Though further testing is necessary.
At 135A load, cell resistance is 0.4, 0.3, 0.3, 0.3 mOhm, for a total of 1.3 mOhm.
Here's a plot of charging for about an hour at 5 A, then space heater load is applied at 85A, followed by space heater at 135A.
AH axis is on the right side and current on the left side.
Battery capacity is 180Ah.
The BMS is the primary OVD. It is set at 3.48V with a reset at 3.36V. Charging is terminated after 60 minutes of solar at 5A. In the previous software version I would see oscillations as charging turns on and off. This problem appears to be corrected. Though further testing is necessary.