MultiPlus-II + Pylontech RT12100G31 + DVCC: no Float at 100% SOC

DIY
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1

Hi,

My systems has: Multiplus II + Cerbo GX MK2 + Battery Pylontech RT12100G31.

Communication cerbo-Multiplus with Ve.Bus

Communication cerbo-Pylontech Ve.can

DVC On

Multiplus Charger config:

  • Lithium: ON
  • Fixed charge curve
  • Absorption: 14.1 V
  • Float: 13.5 V
  • Absorption time: 1 hour
  • Charge current: 20 A
  • VE.Bus BMS: OFF

Charging works correctly and DVCC follows the Pylontech limits. CCL an CVL.

But MultiPlus remained in Absorption beyond the configured 1-hour absorption time. Not goes to Float 13.5V

What is happening?

I do not like that battery remains at 14.1V and not to 13.5V..

Thanks.

4

The inverter settings are ignored with a managed battery.
The system follows what the bms asks for.
If you really want to, you can lower the cvl in dvcc, but if that was required, pylontech would have done it already.

5

Thank you Nick!