I have the same problem with my newly received EB3A and PV120 solar panel.
S/N: EB3A2237009599705
ARM: 2062.02
DSP: 2056.10
I’m sorry only when the PV input voltage is greater than 12V, EB3A can be charged. And if the input is too low, the machine itself will also have its own power consumption, we do not recommend this.
I am in sunny central California.
When I plug the unit into my 120w 18V solar panel,…even at the height of the day the display flashes and refuses to charge at any discernable rate. , I however am getting a reading of 22v to 39V if I check the leads with a multimeter.
Thanks Rob
EB3A2234004621666
ARM V 2057.11
DSP 2056.10
We will push a firmware for you in 6 hrs. Looking forward to your update.
hi, I have updated the firmware, but it is still not charging. I don’t have tool to check the voltage generated from the PV120 solar panel. What else can I do? thanks.
I update the firmware, but not charge under 20w. what can i do?
@Bernat_Orellana May I know the PV input voltage? If the PV input voltage is lower than 12V, EB3A will not get charged.
@Bernat_Orellana Did you place the solar panel under the full sunshine? The intensity of the sunlight, the angle you place the solar panel and the conversion of the solar panel itself, all those factors will affect the final efficiency of solar panel.
Get a higher wattage solar panel more in line with the unit you are trying to charge.
Thanks, it’s obvious that if I add more solar panels it will work, but I need it to work with my panel, which gives more than 12v. I can understand below not charging, but not below 20v. This should be fixed by the firmware. Bluetti, is that so?
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Hi SN is below
EB3A2303012100289
Thanks
GKC
The problem is the low wattage not the voltage. If you get a higher wattage panel you will be fine. The panel you are using is way undersized for the job you are asking it to do.
In addition to the input voltage, it also depends on whether there is current. If the sunlight condition is too bad, the solar panel has almost no current input to the EB3A, and EB3A will not get charged.
For me, the same - the update didn’t solve the problem. But soldering a capacitor as was recommended in the forum (sorry, don’t have the link, but easily searchable) does solve it, and charging goes below 20w.
hello chat
Unfortunately my EB3A works poorly or not with solar input.
“Input” flashes on the display and the app reports a low PV voltage.
The open loop PV voltage is between 20-22V and 0.66A - it is a 150W panel in low solar irradiance.
My other small power station then makes at least 4 to 10 watts but the Bluetti only flashes.
At some point around noon it starts charging, the only problem is that while the input warning is showing, the display always stays on and drains the small battery extremely.
Software is available at ARM V 2053.07 and DSP V 2052.07
MFG Ben
Hello,
As usual with any customer service, you will get apologizes, explanations, encouragements and maybe, if you are lucky, a new firmware… But, finally, the problem will never be solved and a new “revolutionary” model will replace the actual one, pushing old problems under the carpet for ever.
I had same problems as yours and i solved it this way (kind of bad medication on unknown disease) 
- I did overpaneling : 2 x 170W solar panel to get 180W input
- follow advice of one member of this forum consisting in installation of a capacitor on the input solar cable
Now, i can get a normal behavior of the EB3A. It means, i can start charging at about 6:30AM to 6:30PM with peaks of 185W input.
This powerstation obviously have a solar charging problem, but i guess that they will never fix it…
As others brands, Bluetti prefers to give some powerstations for free to Youtubers who will do marketing rather than helping customers who already paid for their products. It is a pity.
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