..another EB3A doesn't charge (solar input)

Product Discussion BLUETTI EB Series
1

I searched the forum and saw plenty of Q, no answers so posting again.

I just bought a EB3A and connected it to a 100W solar panel however the input W stays at 000 (10min).
TROUBLESHOOT STEPS:

  • measured 21.4V as EB3a-end of Solar Panel (Bluetti) cable
  • 115V input charges at >250W

IDK what else to do… Thanks!

2

Hi @jr_sc

the MPPT can handle the following
.
200 W max, VOC 12–28 VDC/ 8,5 A.
In this case 21,4V should be enough to start charging your unit. Do you have any other Solarpanel to try?
.
What do you mean with 115V Input? You mean AC Charging?
.
When you using the Bluetti App, did it show any Solarinput from there? Does the Battery % goes up?

greetings

Erik

3

Thanks Erik

Yes, AC input. I do not have another panel to try but I suspect it may be the panel. It is a 100W and in full sun, EB3A 75% charged, it finally read 35-40W - as soon as the sun hazed-over it dropped to 000.

What kind of power should we expect from a ‘proper’ panel? 35% / 0% seems terribly low.

Best!

4

What is your state of charge when attempting to charge? Is it already almost full?

5

@jr_sc May I know the firmware version of the EB3A？

6

From a 100W Solarpanel i would expect at least 60W - 70W when its in full sun. When you panel deliver less than 50% as advertised i would assume you panel have some sort of defect or you make any mistake by place it to a wrong place.

7

How about try another panel to rule out a bad panel or try car charging to verify the port is working.

8

Thanks all!!

Scott - SoC was 75% - will need to check panel’s short-circuit amperage and/or procure another panel.
Bluetti - updated to latest firmware.
SelfMade - Thanks - good to know. It was directly facing the sun ~30deg off horizontal.

1 Like