EP500Pro AC Charging interrupt

Product Discussion BLUETTI EnergyPro Series
1

Hey guys!

Just try to charge my HomeBackup EP500Pro this morning by the AC Outlet of the AC200L and every like 30 seconds, the relay clicks and interrupt charging. After 2 - 3 Seconds it proceeds.

I try also other AC sources with the same behavior. The AC input voltage is between 230V - 240V and it doesnt matter how much current i select.

Any solution for this?

Thanks
Erik

2

Hi Erik, We deeply care about the issue you raised. May we know if this problem has occurred before?
Could you please inform us whether your EP500PRO has any error codes or historical error reports?

Additionally, have you upgraded to the latest firmware? Please provide the SN number of your EP500PRO and the current firmware version. This information will help us accurately locate the cause and provide you with targeted solutions. Thank you for your cooperation!

3

Hi @BLUETTI_CARE

Thanks for your answer!

The issue persisst for a longer time now. Im on the latest official firmware:

IOT: v9041.10
ARM: v4039.05
DSP: v4038.07
BMS: v1020.02

SN: EP500P2249000060492

There arent any error codes.

Thanks
Erik

4

Hi Erik, Thank you for providing those helpful details about your EP500PRO. Since the unit isn’t showing any error codes, we can confirm it’s functioning properly.
To help us investigate the AC200L’s potential role in this issue, could you please share the AC200L’s SN number and current firmware version?

Additionally, when you mentioned using “other AC power sources,” did that include your home grid connection? This information could help us identify any compatibility factors.

Once we have these details, we’ll be able to provide more targeted troubleshooting steps or determine if a firmware update/service might be needed.
We appreciate your patience as we work through this together.

5

Dear @BLUETTI_CARE

Other AC Sources are, as you mentioned, the home grid connection. It really doesnt matter, which AC cable (have three of them) or which source of AC im using.

I did found something in the meanwhile, that could be the problem. The AC Input have three pins. While the two pins, that are on the upper site didnt move when touching, the single pin under the both seems to be a bit loose. I assume this kind of weak connection produce the disconnection issues.

I checked my other both EP500Pro and the pins on them are not that loose.

Would that be something that can be fixed with a warranty repair?

Erik