@eduard99
Turn Grid Enhancement Mode on, this will assist charging from an unstable AC power source.
That said, there are upper and lower Hardware Limits to what will work, I doubt a Firmware update will help your situation. I saw recently someone posting a grid voltage of 180VAC (Ukraine) being a regular low voltage. This is well below the threshold to charge. Similarly over voltage will either trip the overload or possibly damage the AC180. Unfortunately it’s a bit like putting petrol into a diesel engine, it just doesn’t work.
@Mandp
Thank you for your suggestion. Before posting I tried to turn this mode on, but unfortunately power station was still unable to charge itself under low grid voltage. However, after my inquiry I suddenly received (and already applied) some DSP v2088.03 → v2088.04 firmware update, but no options to adjust voltage thresholds appeared. @BLUETTI and @BLUETTI_CARE is this expected? Or should I simply enable Grid Enhancement Mode again, but this time voltage thresholds were relaxed internally and charging will now work?
Eduard, there is not a function to adjust input voltage for charging, other than the 50 or 60Hz frequency. worldwide power standards are either the U.S style 120VAC range or the Euro/AU 240VAC range. Some countries use different frequencies at the same voltage, that is why this function is programmable.
You should leave Grid Enhancement enabled if your grid is unstable, just be aware that once the voltage goes below charging level, grid enhancement won’t make any difference. If you have access to a pure sine wave inverter petrol generator, that would be an option when the grid is not working.
The generally accepted operating range for 240VAC is from 216V to 253V, so at 180V, resistive loads like heaters or lights may work, but motors or chargers etc will not.
Hi @eduard99, thank you for contacting us. Yes, we have applied to push the new firmware DSP v2088.04. After upgrading, please enable Grid Self-adaption again and adjust the threshold according to the actual grid voltage. Generally speaking, this should resolve the charging issue under weak grid conditions. If it does not work, you can try enabling silent charging.
Thank you for your attention and assistance with this matter, @Mandp.