Hi Bluetti, i am not new to solar or bluetti devices but i have 2 x 555w solar panels connected in parallel as they cant be connected in series as the voltage will be to high. In the summer spring and sometimes in autumn i hit 930w being the highest input i have seen, i have them installed on my ac200max and B230 battery, along with a further 2 x 250w panels connected in parallel and going in through the D050S charging enhancer i have noticed since mid november that my PV input from the array hasnt gone above 387w. I put this down to the weather but over the last few weeks towards the end of january-today the sun has been shining lovely on my panels and multimeter tests suggest my input is way of as though the 200max is capping it somehow and it will not go above 387w no matter what i try the 2 x 250w panels seem to be settling at 158w which is also very low being used with the D050S. I am running at ARM: V4008.03 DSP: V4005.08 BMS: V1017.03 my serial number is 2217000849244 i have tried unplugging all leads and reconnected correctly, switched PV to OTHER and back again but nothing so think its definitely a firmware fix needed if a member of the tech team can send me one through it will be much appreciated thanks.
Hey @Carpcather10
If i remember right, there is a bug where paralel Panels are regonized as car charging and not reach the full power.
Is there any update for you available?
greetings
Erik
Yes i assumed the new update was brought out to fix this issue but having downloaded and updated the 200max it hasnt fixed anything, as far as i know i am all up to date with the correct firmware for the AC200Max aswell so i am still waiting for a reply back from Bluetti on this matter.
- If the solar charging cable is replugged, will the charging power increase?
- May I know the DC input voltage and the current display on AC200MAX?
currently 62.3v 63 w PV input 49% carged DC/AC off, i have also tried disconnecting all leads and solar input cables a few times as i read about this issue but no its not increasing the input, it seems it has been happening a lot after one of the updates screwed things up with panels wired in parallel and it seems its now happened with mine as i do all the updates.
The solar panels are 5 months old and are 74.9v and 9.37amps so in parallel 74.9v and 18.74a in sun i usually see 500+ and 930w being the best input seen from them.
@Carpcather10 Technical engineers determined that the intensity of sunlight was insufficient, resulting in insufficient energy from the solar panels, especially in winter. Also, I want to confirm, did this problem occur after you updated the firmware?