Hello,
I have noticed that the solar feed-in by the AC300 is reduced when the AC output is switched off and no alternating current is drawn. Only after switching on and drawing power is the full solar power fed in.
Eco-mode was off. Silencemode was also off.
SOC was off. Two batteries…one B300 and one B300K … on two separate connectors.
I am asking BLUETTI_CARE to check the error.
Hi @Akel
I think this is a known issue, i read it atleast once here. @BLUETTI_CARE Do you know of any Patch for this problem?
greetings
Erik
2 Likes
Hi @Akel, Generally speaking, when the AC300 + B300 combination is charging via solar while powering high-wattage AC loads, it may reduce the charging power. However, it seems that your issue is the opposite, where it only charges at full speed when an AC load is connected. This is a bit unusual.
Could you let us know if the system’s SOC (State of Charge) was close to full when the issue occurred? When the battery is nearly full, the system enters trickle charging mode, which limits the solar charging power to prevent overcharging and over-voltage. During this time, the solar panels may bypass the load to support powering the devices. This would explain why charging power decreases when AC output is off.
Could you also provide your AC300’s SN code and the current firmware version? We want to confirm if you have upgraded to the latest version.
Thanks to @Selfmadestrom for bringing this matter to our attention and providing valuable reminders.
2 Likes
Hello,
thanks BLUETTI_CARE for your answer.
The total SOC was 75%. The SOC of the two batteries was almost the same.
The same thing happens when I feed in power via the 230V input of the AC300.
Only when consumption exceeds the 230V output does it charge at full power.
Thanks for your help.
Joachim from Germany
Hello BLUETTI_CARE,
I’m still waiting for your answer.
Even if there is no satisfactory solution to the problem, please let me know.
Best regards