I've had a couple days now where my EG4 Wallmount Indoor 280Ah battery goes from 23 to 0% and kicks in AC charging. I've plugged in the BMS Tools via the RS485 cable, and there are no alarms before this happens. The app crashes after a bit so I can't let it run overnight to see more detail.
Any idea what would cause this? I have charged to 100% in the last 4-5 days, so the BMS should be calibrated right?
To recalibrate the battery, you’ll need to charge it to 57V using either a 48V charger or the inverter set to Lead Acid mode.
Are you regularly charging and discharging the battery to an 80% depth of discharge (DoD)?
Here is a link to the recalibration guide.
I've been trying to keep it from 100 to 20, but it regularly goes to 8-10, even though I have the inverter cutoff set to 20%. It may need a calibration. I'll follow those instructions and let you know if something changes. Thank you, Eric!
Do I keep the SOC settings for charging and discharging, just up the absorb to 57?
@michaelahess
Once you change the inverter to Lead acid, the SOC parameters will not matter since it's going based off of voltage. So, you will need to set the absorb voltage to 57V. The SOC can stay the same.
