GivEnergy Batteries out of sync

GivEnergy Products GivEnergy Batteries
1

I have had a GivEnergy solar panel system for around 4 years without problems.
This year I had to get a local solar panel installer to move the system out of our loft and I took the opportunity to add an additional GivEnergy Battery into the system.
The system now is configured Invertor Gen 1 + 5.2 Battery Gen 3 + 2x 2.6 Batteries Gen1
The system has functioned perfectly for the last 4 months (during the hot weather spell) but I noticed yesterday that the battery indications are different on all the batteries. The 1st battery in the chain (5.2) is showing a full charge, the2nd battery is showing the status led on and the next led flashing, and the 3rd Battery is displaying nothing ! I was with the installer when he first connected the new battery layout and he did connect the batteries together when they were all showing a full charge.
Any help or suggestions would be very welcome as winter is coming !!

2

Do you have a list of all the Firmware levels for the inverter and batteries ?

There might be something in the release notes :slight_smile: GitHub - DJBenson/giv-firmware: Archive of GivEnergy firmware files as of 09/04/2026 · GitHub

3

Thanks for your reply,
Gen1 Inverter is on DO.450-A0.451 Firmware
Gen 3 Battery is on 4009 Firmware
Gen 1 Batteries are on 3017 Firmware (if I remember correctly from earlier upgrade attempts !)

4

You might need the battery firmware update on the Gen 3 :

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and I’d also update the Firmware to 3022 on the Gen2.

I am not sure how you do it these days - so you might need to get a USB stick ready

5

Thank You so much for your help with my problem - I will now try and find out if it is still possible to obtain and upgrade the firmware.

6

Incorrect Comms cable wiring by local installer caused the initial problem.
My Thanks to Predsupport for finding the solution !
According to the Release Notes, the Serial No. on my Gen 1 Inverter SA2202**** means it cannot be updated beyond it’s current version.
I have updated the Gen 1 Batteries to 3022 firmware, but cannot update the Master Gen 3 Battery from 4009 as the USB is internal, not external.