BMS1000 ang Lynx Shunt VE can - both needed to give accurate SOC?

Q&A and troubleshooting
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1

out of necessity it had to upgrade to lithium in October - upon arrival in Greece i was recommend an electrician by the marina - short: he f#cked me over.

Now i’m trying to make a proper setup.

I have 5x300ah batteries, 5KW multiplus 2 inverter, Cerbo GX with touch, 2x MPPT, 2X Power In, 2x Distributor and BMS 1000, need to redo the installtion completely as it is a mess.

My question:

Will i need to and the Lynx Shunt VE can in order to get ACCURATE SOC?

I m talking to. new electrician, he says he can get accurate SOC from the BMS - what is the community’s opinion

THANK YOU

2

If you mean you have a Lynx Smart BMS or a Lynx Smart BMS NG, then it is its own battery monitor so as long as everything is connected properly there is no need for any other battery monitor.

3

hi Justin, thanks for replying.

presently i have rhe BMS1000 - No Lynx Shunt VE.can,.

My SOC is useless with the BMS 1000 alone, it can be due to configuration, but the only way I can estimate my SOC is via the voltage and the is NOT good. I have absolute no problem adding the shunt - unless I learn that it does not add any real value.

Sorry, forgot to write that I also have 2 Orion XS dc-dc

4

There’s no Victron product just called a “BMS1000”; what exact product do you have?

I may be mistakenly assuming you have Victron batteries and a Victron BMS, which would change things if not the case.

5

I have this:

Victron Lynx Smart BMS NG 1000

6

My batteries are this model:

BAT512130620
Victron LiFePO4 Batteries 12,8V/300Ah NG

7

Okay, so yes, it has its own battery monitor, no other monitor would be needed, and probably just needs everything to be connected/configured properly! Here’s the user and installaation manual for it: Lynx Smart BMS NG Manual

8

thanks Justin, i will go through it, think you are right

9

My Lynx NG BMS reports accurate SOC, no other battery monitor installed. Make note of the requirement that no loads or chargers are connected directly to the battery side of the BMS, everything connects to the system side.

10

hi pwfarnell, thanks for the update.

how accurate is your SOC?

are you using solar?

11

As far as I can tell it is accurate, I have checked measured current against a clamp meter and it agrees with other readings on the system such as my solar controller. I am extremely happy with the way it works.

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