We have a Victron Multiplus II 10000/140-100/100 plus an LVS 8.0 BYD battery system. The on-grid the net is limited to 10 amps.We are living in Spain.
At night, the electricity is very cheap, and we charge the battery from the grid. During the day, the sun does its work. We don’t feed anything back into the grid (at least).
It’s been working fine for days, but occasionally we get the “low battery” alarm. We also notice that we get the message when starting up the system. We then switch on group by group in a controlled manner.
To be safe, we replaced the 50mm cables from the battery to the system. We checked everything. We use ESS.
Everything is running on the latest firmware version.
Does anyone have any advice for us?
Where does the error message originate from?
The ve bus or the byd itself?
Is everything programmed and set up as recommended here.?
Goodmorning !!
| 276 | VE.Bus System [276] | Low battery: Alarm |
|---|
Thats the one
Regards Ed Bontekoe
Ok. Great.
Then there can really be two causes.
- High resistance connection to the battery bank.
- Dynamic cut off and low dc voltage warning settings.
THX !! we will check !!!
Ok , so all good there.
Then all connections in the battery wiring, DC sizing and torque and crimps should be verified.
Does the 
have a BMU?
yes we have.
Are you powering up from AC first or DC?
Is this your battery start up procedure? They have a pretty clever pre charge (or at least mine does). So a bank start up should not be a surge start. And the system start up is DC first.
The final step, once you’ve confirmed all the crimps and connections are good, is to use a multimeter to verify that each inverter is reading its terminal voltage correctly.
Hi, shut off all the groups,then first start the battery an panels,then the inverter ,then switch on the house groups on the moment checking all the cables tomorrow the last 2 .
Thx so much for thinking with us !
Vriendelijke Groet,
Ed Bontekoe
+31651843112
Today, all 50mm battery cables were preventatively replaced.
Everything was fitted with new connectors. Even booting the system was no problem. Hopefully, the low battery issue is resolved; we’ll see in the coming days. Thank you all so much for your input and support!
Ed
Why did you set 47V everywhere? I have the same issue with Dyness DL5.0C.
lots of low battery alarms.
Also be aware l, 140Ah is to low for the 10000VA multiplus, you need at least 250Ah
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