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luupus asked

BYD Premium LVL 15.4 - weird approaching to 100% SOC while charging2

This has already been posted once, and I am seeing the same behaviour, triggered by the BYD BMU (2x, 30 kW). Reaching 100% SOC, there is a discharge spike of about 250 A (13 kW).

batteryspike.pngThis results in a brief grid export of 13 kW. I am limited to 4 kW. Any idea how to make this stop?

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batteryspike.png (83.9 KiB)
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Alexandra avatar image Alexandra ♦ commented ·

How fast are they being charged?

What is the cell balance like at this point?

Is it discharging to try control cells overshooting?

Have you done any mods?

Try slow down the rate of charge. It may help. Or cap the battery voltage in DVCC.


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anthony avatar image
anthony answered ·

What is the BYD Be Connect app showing when this behaviour is occuring?

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