I have an eb3a that’s been rendered useless for no reason, it is not that old. It displays 100% battery, but dies immediately after unplugging from main power wall or solar. I have had it for about a year and I bought it brand new from Amazon. I have tried a number of things to try and get it fixed to no avail. Is there a way to factory reset it? Or any tips/tricks that can assist me? Please Help!
Hi @g.quinn
Maybe this can be fixed with a firmware update or your unit is faulty. In both cases @BLUETTI_CARE can assist you :)
greetings
Erik
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Hi @g.quinn, The issue lies in the inaccurate SOC of the EB3A, which mistakenly believes it is 100% charged and therefore refuses to continue charging, while in reality, it is over-discharged.
Please plug the EB3A into the AC home grid and charge until it is 100%.
After that, please turn on the AC and DC outputs of the EB3A. After 30 minutes to 1 hour, the EB3A will drop from 100% to 99% due to self-consumption.
After the SOC of EB3A drops to 99%, please disconnect EB3A from the home grid to see if EB3A can be turned on normally. If so, please AC-charge the EB3A again.
Normally, the EB3A will work well after charging, and please tell us the EB3A’s SN number, DSP, and ARM version. We will push the new firmware to avoid this problem from happening again.
We appreciate @Selfmadestrom’s kind help!
Morning, over here it is, anyways.
Thank you both for your response to my issue. This is something i haven’t tried, i will do that and get back to @BLUETTI_CARE with the results, good or bad. I’m praying for a positive outcome.
Thanks again
George:)
@BLUETTI_CARE Hey you, I have tried all that you have suggested, I tried to turn on the AC and DC outputs of the EB3A, but it just shuts off after I have it plugged in. And the AC outlet doesn’t not come on when it is plugged into the wall outlet. The DC works but shuts off after about a minute when it is plugged in as well. I have checked if the latest firmware has been installed, it says it is up to date on my bluetti app.
Not sure what I can do at this point. Hopefully you have some insight on my next steps.
I have provided the order number of when I purchased the Bluetti EB3a.
I purchased it on June 7th, 2024 from amazon.
Hi @g.quinn, Thank you for getting back to us so quickly.
We’ve already forwarded this information to the AMZ service team. They will contact you later on the AMZ platform and resolve it.
To protect your private information, please delete the order number provided earlier.
Let us know if you need any additional assistance!
Thank you so much, I am praying it gets resolved.
George
Hi George, Thank you for your understanding. We have arranged priority service for you.
Hope everything goes smoothly and the issue is resolved as soon as possible!
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@BLUETTI_CARE
I got the same probleme Here. It shut down when unplug when it says it is at 100%. I’v try too see if it work some time at 99% and, it did! I need too get the updated version of the firmware please.
EB3A2224000285822
ARM: v2057.06
DSP : v2056.06
Thx and please keep me updated.
Hi @Bob_Bobilou, The issue lies in the inaccurate SOC of the EB3A, which mistakenly believes it is 100% charged and therefore refuses to continue charging, while in reality, it is over-discharged.
Please plug the EB3A into the AC home grid and charge until it is 100%.
After that, please turn on the AC and DC outputs of the EB3A. After 30 minutes to 1 hour, the EB3A will drop from 100% to 99% due to self-consumption.
After the SOC of EB3A drops to 99%, please disconnect EB3A from the home grid to see if EB3A can be turned on normally. If so, please AC-charge the EB3A again.
Normally, the EB3A will work well after charging, and please let us know.
We will push the new firmware to avoid this problem from happening again.
@BLUETTI_CARE Yes it did work well for a bit if I disconnect the cable when its at 99%. I would like to try the new firmware.
Thank you
Hi @Bob_Bobilou, We are more than happy to push the new firmware to you. However, before that, please make sure that the EB3A has returned to normal. The new firmware will help prevent the problem from recurring.
Now I have applied to upgrade your system to our IT department. They will push the latest version of firmware to your unit in 24 hours.
Please upgrade the firmware tomorrow. Please do not load any device when upgrading it.
Please let us know if it works.
Hi, I want to chime in on this issue as I have had and already went thru the firmware updates and the issue persisted. My unit is 3 years old and way out of warranty plus I bought it used too. So my unit got so bad it would not charge no matter what I did. I used the jump start technique for awhile and that quit working too. I also did the unplug the harness labeled U1 which would reset it somehow. And that quit working. Heres what I found. There are 7 sets of paired batteries paralleled and wired in series to make the 22.4 volts. Now I only took the top cover off to do this test and repair. On the back of the unit inside there is a vertical board which all the cells connect to. There are silver contact points on the board and are labeled as Bat 2 Bat 3 etc. I watched a Chinese video of a service guy testing the cell packs with A DVM. So I did the same and found that Bat 1 only had 2.4 volts. All other packs had 3.2 volts. As you may know 2.4 volts is a total discharge of LifePo4 cells. The BMS does not know how to Wake the cells back up as It is called. So I rigged up a way to manually recharge that B1 pack with my Opus Lion charger at 1500Mah. It took 5hrs to get the cell up to 3.26 volts. After that the unit fired right up I did a small discharge down to 90% and then a full recharge and all was good. I monitored the charging volt on that low cell pack and it charged at 3.44 volts. Thats really low for a charge voltage and should be around 3.6 volts. That was 3 days ago and my EB3 working great so far.
Now my thought. Is one of those cells bad. Why did that pack drop out. So many people having this problem makes me wonder did Bluetti get a bad batch of cells. These are 10 year batteries. My unit inside dated 3-14-22 on inverter board. Just over 3 yrs so they should be good for many more years. I will monitor that cell pack and see if it persists in losing volts. If so then its a bad cell. Replacing one would be a difficult job without special tools to weld the new cell in place. Thats out of my scope.
But I FOUND THE REAL PROBLEM. If any one of those cell packs volts gets too low it will not charge no matter what you do…without going inside. That little job I did on this is not for the average person and if you do it you need a single cell lithium charger like the OPUS and a creative way to connect it.
Maybe Bluetti can look into the cells issue deeper and not so much on firmware and software revisions when its likely a hardware problem as in bad cells. They may not even make the EB3a anymore so no way of knowing.
Hope this helps some people like me who will not accept failure so easy and enjoys fixing things too.
Hi @Catman, Thank you for choosing Bluetti. We are more than happy to assist you. Based on your test results, there is a significant voltage difference between the internal cells.
Batteries have a cycle life, and we are concerned that this battery has been overused and may have reached the scrapping standard.
However, you can also try using a slow car charger to gradually wake up the deeply sleeping battery, or AC+ DC charging simultaneously—this might help.
If this doesn’t work, please contact us via private message and provide your email information. We would like to apply for alternative solutions for you.