High Voltage Alarms BSLBatt

Question

question

mdk asked May 20, '24

High Voltage Alarms BSLBatt

Hi everyone,

Lately I've been running into issues where Im getting a ton of High Voltage Alarms normally when the batteries are full or near full charge. System is around 3 years old.
My setup:

Venus GX (v2.92)
MultiPlus-II 48/5000/70-48 (v482)
SmartSolar MPPT VE.Can 150/100 rev2 (v3.13)
4x BSL Batt B-LFP48-125E - 48V (51.2V), 6.4kWh, 125Ah

I have no idea where to even start looking for the issue but I do have the home integration for my system so I do collect and store a lot of info. I've attached some of the screenshots from the recent alarms.

overvoltage bslbatt

whatsapp-image-2024-05-20-at-135741-fd170e98.jpg (51.7 KiB)

whatsapp-image-2024-05-20-at-135628-e9f9515c.jpg (13.7 KiB)

whatsapp-image-2024-05-20-at-135611-068cd48d.jpg (13.8 KiB)

whatsapp-image-2024-05-20-at-135557-4c109be3.jpg (13.5 KiB)

1

2 |3000

Attachments: Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

mdk commented · May 27 at 06:34 AM

Just checking in if anyone has any ideas

0 ·

Modifications Space

Node Red Space

Answer 1 · 2024-05-27T06:44:48Z

nickdb answered · May 27 at 06:44 AM

Like all of these type of events, it is reported by the BMS.

So the standard advice applies.

Double check the settings vs the BSL reference setup doc

https://www.victronenergy.com/live/battery_compatibility:bsl

Use VRM advanced widgets to chart cell min/max from the BMS - this will show if there is a disparity.

If there is one, the GX should report which cell this is.

BSL have PBMS tools which allows you to connect to the battery and check the BMS readings as well.

3

2 |3000

Attachments: Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

mdk commented · May 27 at 11:45 AM

@nickdb thanks for the response. I followed the guide you sent and these settings look correct now. Looks like they weren't adjusted after my last 2 batteries got added.

0 ·

screenshot-2024-05-27-134143.png (27.7 KiB)

screenshot-2024-05-27-133824.png (26.4 KiB)

mdk commented · May 27 at 12:37 PM

Not even an hour later same result. High voltage alarms

0 ·

nickdb ♦♦ mdk commented · May 27 at 05:42 PM

New batteries is an important piece of information that should have been mentioned.

New batteries will have these issues, it can be a pain adding to an existing pack. New batteries should be master. They should be charged to a similar level before being added.

BSL is slow to balance and the errors are normal on young batteries. Its best to leave them on keep charged for a few days.

Again, check the charts for min/max cell voltage.

I would chat to your supplier for help as this isn’t easy to diagnose over the internet without all the detail and suitable access.

0 ·

Answer 2 · 2024-05-27T17:18:18Z

Alexandra answered · May 27 at 05:18 PM

@MDK

How much later were the batteries added?

There is usually a sticker on them somewhere with their firmware number on them.

They made quite a few firmware changes. Might need to see if you can get them (BSL) all onto the same firmware.

2 |3000

Attachments: Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

question