Multiplus II 48v with LG Chem LI

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tieole asked Jun 28, '19

Multiplus II 48v with LG Chem LI

I have been trying to get the MultiPlus to work with the LGBattery with out success all morning.

Following the instructions in the Victron & LGChem whitepaper, I set the VEConfigure ESS assistant and the CGCX.

When I turn on the Multiplus I get an low battery error (the battery is at 51,9V). When I plug in the grid, the charger and bulk lights turn on, but the battery does not charge. I see the grid and the energy needed for the Multiplus comes from the grid, but does not charge the battery.

I am lost on where to go from here.

Multiplus-II LG Chem RESU

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Answer 1 · 2019-06-30T22:12:33Z

Guy Stewart (Victron Community Manager) answered · Jun 30, 2019 at 10:12 PM

It may be possible to get this working, but I want to note the ONLY MultiPlus that is tested working with the LG Chem is MultiPlus 48/3000/35.

This is different to the MultiPlus-II.

So what you are trying to do is untested and unsupported by both LG and Victron.

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

Does the battery charge when you change mode to Keep Battery Charged in the ESS menu on the CCGX?

Regarding low battery warning lights on ESS systems, you may wish to read here:

How can I suppress low battery warnings?

https://www.victronenergy.com/live/ess:design-installation-manual#faq

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tieole commented · Jul 02, 2019 at 08:06 AM

Yes. With the keep batteries charged the grid charges the LI batteries. But still the inverter only turns on for 3 seconds when the inverter is started, then goes to low battery and the inverter light switches to off.

On the CCGX the Low DC voltage alarm is set to Alarm only.

Ideas?

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tieole commented · Jul 02, 2019 at 08:27 AM

I spoke too soon. After 20 minutes on charge the Inverter is on. But the low battery is still flashing. A great advancement.

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Answer 2 · 2020-06-21T09:04:55Z

lopezjm2001 answered · Jun 21, 2020 at 09:04 AM

Do you have a shortcut for the Victron & LGChem whitepaper? I could not find it. Thanks.

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Answer 3 · 2020-06-21T22:38:33Z

ejrossouw answered · Jun 21, 2020 at 10:38 PM

Hi @tieole Are you using the correct comms cable? Also, which LG as I have had my RESU10 working just fine on both MPII 3 & 5KVA. If you have not seen the Victron guide, something is probably amiss.

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