widget4145
New Member
I would agree with you if its a matter of efficiency.Unrealistic expectations of accuracy it would seem, 0.5V of 50 volts is 1%, that close to laboratory grade equipment and for 16S batteries 31 millivolts per cell, so its the setting that should be adjusted or the battery and it would be way to close if this knocks a BMS offline.
But no. In my case, whenever TOU is enabled, it deliberately pull the voltage down, and when TOU is disabled, it pushes the voltage to where you set it.
So clearly, something has offset in the firmware side, not an efficiency issue, or a matter of laboratory grade equipment. If it can give the requested voltage when some feature is disabled, and not when enabled, clearly it does say something in the software side.
Or in the OP's case, when there is no grid, or when there is excess solar, always that magic 0.5v figure.
And 0.5v matters.
For example, you set 3.45vpc balance start, that is 55.2v for 16s. How can it balance if inverter only gives 54.7v?
Or in the JK Inverter BMS's case, how can it proceed to float mode if it never reach absorption voltage, e.g. 55.2v?
Just compensate it? Nah, a bandaid solution. What if there is no grid? Then we are overshoot of 0.5v? Do we always have to watch our inverters so this wont happen?
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