Hello @BLUETTI_CARE,
I need assistance with my AC240 charging station, located in Ukraine. A heating system is connected to it, and the outdoor temperature is around –15 to –20°C. Previously, the unit discharged 2–3 times a day down to 0%, but during the last three days, it turns off at around 60%, showing 0% charge.
I suspect there might be an issue with battery balancing.
Please check the possible causes and advise on a solution.
AC2402423000206393
BMS v1035.04
Best regards,
Vitaliy
Hi Vittaliy,
The first thing to try is a recalibration. I appreciate this might be difficult if your electricity grid is unreliable.
Recharge to 100% with no loads connected.
Discharge with a constant load (like a heater without a thermostat) until the battery runs out and shuts itself down. Many people seem to recommend using a heater of about 500w for this.
Let it cool down.
Recharge on standard or slow rate, with no breaks in charging, until it reaches 100%.
Occasionally the recalibration process may have to be repeated. It is also good for battery care to perform it every 3 months or so.
My AC240 discharges for three days at 200W and charges at 200W.