New Smartsolar MPPT 100/50 not charging

DIY
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1

Hello,

i have a new Victron Smartsolar charge controller, the MPPT100/50 model. I installed this with 2 215watt Callsun 12v panels connected in series on top of my Class A motorhome. I had to replace my original Inverter/charger so i went with the 3k Mutiplus2 and a Cerbo GX to tie every thing together. I also changed out the house battery to a Vatrer 560ah LiPo4 at the same time. The first 2 days the solar controller seemed to work as when i first hooked to solar i had left the battery drain down to check function then connected shore power as i needed to had the ac on. I then left for a trip, on the first day the solar was working while driving as seen in the attached screen shot but then the next day only 1watt of charge current. I have checked the voltage with a Fluke mulimeter and the voltage corresponds with what the screen says. I have checked all the connections and even remade the extension cables from the panel to roof MC-4 input (factory installed solar prep). Any help would be greatly appreciated.

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Thank you,

Mike

2

did you program the mppt to the correct settings for this battery ?

3

Yes, initially used the rotary switch 7 setting ( LiPo4). Tried user defined settings for what the battery called for.

4

Do check your battery connections, that the battery is not fully charged, and see if the battery voltage is the same as is indicated by the MPPT battery voltage.

5

The controller may still be set to the lead-acid settings, and the battery’s BMS has shut down due to overvoltage.

6

Yes all voltage readings at the controller terminals are what the app says.

7

yes checked all connections, let battery drain down and still doesn’t charge, plug shore power back on and the Multiplus2 charges normally so battery BMS works correctly.

8

Do you have any details about your setup?