Hello,
here is running a four years old ESS with three Multiplus-II 48/3000/35-32 and a BMZ ESS-X battery controlled by a CCGX via CAN.
The "State of health" of the battery was displayed by the CCGX as 94 % during the last months.
Today I made a firmware update of the CCGX device from 2.94 to the recommended 3.00 (with no further change of settings). After update/reconnect the CCGX now shows an "State of health" 87 % for the battery. 7 % less in 2 minutes.
Why this jump? Any reason to worry?
Did you change the calculation routine in the new firmware?
The battery is located in the basement, actual temperature: 20°C, no problems, alarms, messages. Is it recommended to adjust any parameter because of battery aging (CVL=61,5 V, CCL=0 A, DCL=300 A, Min. SOC, voltage etc.)?
Best regards