Battery serial numbers

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Sloanyd
Posts: 21
Joined: Sun Nov 12, 2023 1:38 pm

I have just discovered my batteries have different version number, please see screen dump attached.
Should i ask the installer to update or is this nothing to worry about?
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Screenshot 2024-01-26 at 14.49.13.png
Dave Foster
Posts: 1294
Joined: Thu Oct 13, 2022 7:21 pm

At a minimum all the slaves should be the same version, but actually they are really old firmware versions, I would recommend you ask your installer or raise a ticket along with your inverter serial number to FoxESS and get them updated - later versions have improved capacity, temperature handling and SoC stability.

Current Mira Versions are :-

1.011 for Master (BCU) and 1.09 for Slave (BMU)
Sloanyd
Posts: 21
Joined: Sun Nov 12, 2023 1:38 pm

Thank you Dave,

I have contacted the installer, I will give them a week to update and raise a ticket if they dont do it.

Darren
reef
Posts: 107
Joined: Sat Sep 09, 2023 10:06 am
Location: East Yorkshire

Please let know if you see any improvements when the firmware is updated. I'm running 5x HV25s like yourself and am also on master 1.004 and have 4 batteries on 1.00 and one on 1.001.
Sloanyd
Posts: 21
Joined: Sun Nov 12, 2023 1:38 pm

reef wrote: Fri Jan 26, 2024 8:11 pm Please let know if you see any improvements when the firmware is updated. I'm running 5x HV25s like yourself and am also on master 1.004 and have 4 batteries on 1.00 and one on 1.001.
Will do
reef
Posts: 107
Joined: Sat Sep 09, 2023 10:06 am
Location: East Yorkshire

I've just been updated to the latest versions today which are now 1.013 Master and 1.10 slave. I'll report if I see any improvement!
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