[Closed] EG4_FAAB-2525

EG4_FAAB-2525

2025-09-28

Firmware Changelog – FAAB-2525 （Based on FAAB-2122）
1.Added support for BASCO battery protocol （Battery Brand Setting 22）.
2.Added support for SunSpec Modbus IEEE-1547 certification.
3.Added support for N-PE bonding setting – enables closing the N-PE relay only in off-grid mode.
4.Added support for displaying EG4 battery model information.
5.Improved download time for subsequent firmware updates.
6.Enhanced encryption for firmware update packages.
7.Improved stability of remote LCD firmware updates.
8.Added ability to configure generator exercise cycles even when grid power is available （keeps generator in idle operation）.
9.Improved MPPT behavior.
10.Adjusted the Absorb Voltage and Float Voltage lower limit from 50 V → 48 V.
11.Expanded the setting range of Stop AC Charge SOC （%） to 0–101%.
12.Expanded the configurable range of grid protection parameters for 127/220 V grid type.
13.Fixed issue where LCD communication fault could occur when the FlexBOSS LCD screen kit backlight was off.
14.Improved LCD display for PV input arrow:
- Single unit: arrow displays when PV power >100 W
- Parallel system: arrow displays when total PV power >300 W
15.Fixed issue where consumption power was not displayed on monitoring line chart during off-grid or parallel operation.
16.Improved stability when switching between on-grid and off-grid modes if the battery discharges to the On-Grid Cut-Off SOC/Voltage while running with GridBOSS and set to Off-Grid mode.
17.Improved SOC control mode:
- If battery voltage drops below the off-grid cut-off voltage, the inverter will force charge the battery up to （cut-off voltage + 2 V）.
- Prevents over-discharge in cases where BMS SOC reporting is inaccurate.
18.When inverter is set to lead-acid battery mode or no battery mode, the active W04: Battery BMS Status Alarm will now be cleared automatically.