Quattro says it’s in absorption mode ( although it’s actually in Float)

Question

question

Trevor Bird asked Sep 15, '22

Quattro says it’s in absorption mode ( although it’s actually in Float)

We have installed 600Ah of Lithium Smart batteries and Lynx distribution and Lynx Smart BMS. Also installed is a Quattro 24/8000 and three 24/17 Orions. The Lynx Smart BMS is VE.Can to a CerboGX. The CerboGX connects via VE.Bus to the Quattro.

The performance is ok with the Quattro charging through bulk to absorption. The terminal voltage of the batteries shows a float value and it comes down from absorption as it should. Performance is normal however the Quattro says it is in absorption mode. It is controlled by DVCC and the Lynx Smart BMS is the boss but the Quattro doesn’t know it is in float stage.

Anyone else seen this? Performance is ok but the status of the Quattro seems wrong to me.

Thanks and regards,

Trevor

lynx bms lithium smart

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.

pwfarnell answered · Sep 16, 2022 at 07:21 AM

Upgrade the Cerbo to v2.90 firmware and it will no longer state "bulk" / "absorb" but "ext. control".

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.

Trevor Bird commented · Sep 16, 2022 at 09:28 AM

Many thanks @pwfarnell . That solves the issue so that will be updated on Monday. Many thanks for that advice!

0 ·

Modifications Space

Node Red Space

Answer 1 · 2022-09-15T13:10:33Z

klim8skeptic answered · Sep 15, 2022 at 01:10 PM

Apparently the 'charge sate' terminology for chargers and managed batteries is being moved over from Bulk/Absorb/float, to "External Control"

Perhaps all the firmware/updates are not at the same definition?

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.

Trevor Bird commented · Sep 15, 2022 at 11:34 PM

I suspect that is true. The Quattro charger is controlled by the Lynx BMS quite well but the advice to the user seems wrong. Hopefully it can be resolved because it works as it should the wrong user advice could get very confusing to a client.

0 ·

klim8skeptic ♦ Trevor Bird commented · Sep 16, 2022 at 04:24 AM

Dunno if this is helpful.

0 ·

Trevor Bird klim8skeptic ♦ commented · Sep 16, 2022 at 04:52 AM

Yes..thanks..that helps reinforce my suspicions. It would be good if Victron provided guidance on these issues. They may have done so of course and I havent found the information.

0 ·

question