EAsySolar shows discharge and low SOC with charged battery's and under surplus SolarPower

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bschrijver asked May 1, '23

EAsySolar shows discharge and low SOC with charged battery's and under surplus SolarPower

Hi,

My EasySolar-II 48/3000/35-32 software behaves unexpected.

Battery shows discharging all the time down to 0% SOC. I was advised to buy the BMV module to solve this.

I think the software calculates internal loss as power taken from the battery (altough solar and grid are available and batteries remain fully charged).

In the attached picture AC loads + Grid Feed almost equals PV charger output.

Battery voltage is always 52.80 (from 100% SOC down to 0% SOC) so the 198 watt discharge is a faulty indication.

However, the voltage of the battery is available to the software so a rough SOC can be calculated anyway, without shunt. Its a software design error. I would appreciate an update not giving this miscalculated discharge and SOC.

Have a nice day !

EasySolar All-in-One ess discharging

discharging.jpg (33.8 KiB)

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Answer 1 · 2023-05-01T10:02:28Z

Matthias Lange - DE answered · May 01, 2023 at 10:02 AM

I guess the BMV is not wired correctly, check the manual again.

Maybe make some pictures of the installation.

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bschrijver commented · May 01, 2023 at 11:22 AM

Thanks for the response Matthias.

There is no (external) BMV connected.

It is just the EasySolar-II GX 48/3000/35-32, 8 solar panels in 2 strings, 4 batteries (with fuse, no shunt or BMV). And as you can see a grid connection AC1-in and load on AC1-out.

:-)

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Matthias Lange - DE ♦ bschrijver commented · May 01, 2023 at 11:36 AM

What batteries?
What settings in the GX device and MultiPlus?

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Answer 2 · 2023-05-01T14:17:22Z

bschrijver answered · May 01, 2023 at 02:17 PM

veconfigure3file.pdf is the configure file. The extention changed to pdf to send it here, when you change it back you can load the file in the config tool. 4x 100 ah AGM battery.

What are you lokking for ?? All parameters are set to match the battery and the system runs mode battery always charged for UPS purposes.

Kind regards,

Bram

veconfigure3file.pdf (5.7 KiB)

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