Hello Bluetti Team,
i have 2 Problems with my EB3a.
Problem 1:
Sometimes the device turns off at 20% or below and it’s dead. It doesn’t turn on again and it’s not possible to charge it via Solar or Car socket, only charging with AC brings it back to life. Then it starts at over 20% and after full charge and discharge it works fine for a few days.
This error occurs after the last firmware update. Before this update it just jumps to 0% in this case and i was able to charge it via solar or car socket.
Problem 2:
I’m not able to charge the device on my Inverter. I have a pure sine wave 230V inverter and when im charging the device stops and start charging every few seconds in a loop. It’s the only device that not works correctly with the Inverter.
Maybe you can push a Firmware Update to my device.
SN: EB3A2227001758801
230V Version
ARM: v2061,02
DSP: v2052,11
Welcome @Cybermitze with problem 1 sounds like you need to recalibrate the battery - charge to full from ac with nothing connected to the unit then discharge in one single motion no stopping until the unit completely shuts down then charge from the ac again with nothing else connected. It happens sometime after an update I usually calibrate all my batteries every 3 months to keep them running at 100%.
Problem 2 will it take a charge form a solar panel ok are you getting any error codes.
Problem 1:
I calibrated the battery several times. After calibration it works fine but when i don’t use the device for a while (maybe 1 or 2 weeks) and discharge the battery at very slow rates this error occurs. Before the last update it always jumped e.g from 23 to 0 and i was able to recharge it via solar or car socket. Now the device is dead and I have to charge it via mains when it happens.
I take your advice and try to calibrate the device like you described.
Problem 2:
I can charge with solar or 12V car socket without any problems (except when problem 1 comes up). Only charging on my pure sine wave inverter causes this start-stop charging error. Charging via mains works like a charm.
Hi @Cybermitze, We have arranged to push the new firmware DSP v2052.51 for you, which will be completed within 24 hours. This firmware optimizes the performance of the EB3A during generator charging and supports more generator models.
Please upgrade tomorrow, and ensure no devices are connected during the process.
Thank you, @Ktt, for your response. Yes, we would like to know the specific error code.
When the issue occurs, please press and hold both the AC and LED power buttons simultaneously to view the error code.
This information will help us further investigate the issue.
Additionally, since you mentioned the problem occurred after a firmware upgrade, could you specify which firmware it was—DSP or ARM? We also wonder which country version of the unit is, can you let us know?
Problem 1 has gone. Now it ist like before, when battery is not calibrated it jumps e.g. from 14 to 0 but the Powerstation ist not dead. When i press a button it shows 0 percent and i’m still able to charge via solar or car socket.
Problem 2 is a little bit complicated. I found out, when i disconnect ground it charges fine with my inverter, when i reconnect ground i have this problem again . I’m an electrician and maybe a find a solution for this.
Hi @Cybermitze, We are glad to hear that Issue 1 has been resolved.
Regarding the grounding issue, we would like to know how you have grounded the system — is it directly connected to a wall outlet or through a grounding rod?
Normally, typical loads do not require grounding, so the floating ground mode selected for our equipment can operate safely.
The outlets are grounded from the Mains. In my House the neutral and ground from the mains is the same wire, in the fuse box it is splittet into Neutral and Ground. When i switch from mains to my inverter (off-grid inverter) the Neutral from the inverter is connected to Ground too. It is a TN-C-S system not an IT system.
I just found out when i turn the Plug (Type F) it charges too without disconnecting the Ground wire.
German plugs can be rotated, so L and N are swapped.
I think my inverter produces some kind of hf-noise or something like that which interferes with the EB3A.
Hi @Cybermitze, Thank you for sharing this good news!
From your response, it’s clear that you are truly an expert in the power industry!
I am glad to hear that, I have also shared it with our engineer who concerns this problem, he is happy too!
