Multiplus only charges lithium at 120Amps

Q&A and troubleshooting
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1

Hi,
I have two lithium batteries connected to a Lynx Bms connected to a Cerbo GX via CAN bus.
the CerboGX is configured as a VDCC and connected to a Multiplus 12/3000/120-50 230V via VE.bus.

Finally, there’s a 3600W isolation transformer between the multiplus and shore power.
I configured the AC Input Current Limit in the multiplus at 15A (3600W/230V=15.65A), which should give about 246Amps at 14V when charging the lithium bank

the totat current during the bulk phase is always 120Amps regardless of whether there’s one or two batteries connected to the system, so I assume the batteries are not the limiting factor here.

Is there another setting somewhere else I could set?
Thank you !

2

What MultiPlus do you have?

3

I have a MultiPlus 12/3000/120-50 230V

4

Your MultiPlus can only change with max. 120A.
Take a look at the datasheet.

2 Likes
5

Now I feel stupid… I assumed that since this is the 3KVa unit it would charge at that power, but the datasheet is indeed very clear ! Thank you for pointing that out.
Brann

6

From the model number

12 = 12V battery
3000 = VA power rating
120 = charge current
50 = ac transfer relay amp rating
230V = ac voltage

7

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