Hi Arnar,
Yes, that’s it. With no solar in the evening, a forced charge comes from the grid, and the inverter caps charging from the grid at the grid charge power (register 47242, the value FusionSolar shows and sets). Yours was evidently very low (your log: 126 W against 3000 W asked for), so the battery crawled. With “Set grid charge power to 1500 W” it was allowed 1500 W from the grid, and it charged at that pace.
Good to know:
- Grid charge power can’t go above its limit: the grid charge power limit (register 47244), which is 2000 W by Huawei’s default. For 3000 W from the grid, raise the limit first with “Set max power charge from grid to 3000 W”, then use “Set grid charge power to 3000 W”.
- Max charge power applies too: the card never asks for more than Max charge power (register 47075).
- Where to check: all three are in the battery’s device settings, under “Charging from the grid” and “Charge and discharge power”, read from the inverter.
About the test run: pressing Exit early made no difference. Your log shows the command was sent completely (“Force charge command sent”) and the battery confirmed it (“Force charging confirmed by poll”).
