SOK 48V 100Ah Pro Fault - OVP 9999??

Hi all, today my SOK 48 V100 Ah sent up a fault. See pic.

I thought it might be something to do with cell balancing. It was bright and sunny out, and I have a 1.7kW array (2S2P), so I turned off the inverter and let it ride to 100%. That actually did stop the fault light from blinking. But then after I turned the inverter back on, the fault came back.

This battery is used by itself (no other battery), along with a Victron 150/35 MPPT, Victron Phoenix 48/1200 inverter, and Cerbo-S GX.

I'm in the USA. In the Current Connected video demo, their "OVP" was at 1 - mine is at 9999! Problem there?

It's still working (powers a window A/C unit), but throwing the fault. I'm about to leave this thing alone for a month as I travel - bad idea?

Pinging @HighTechLab for some expertise.

941all-electric said:

I'm about to leave this thing alone for a month as I travel - bad idea?

Click to expand...

I would guess that the 9999 number means you hit overvoltage on a cell over 10,000 times!

I dont know if the 9999 has anything to do withe the fault.

Download the SOKTool software from Current Connected. Use last link on the page.


The software might give more information and/or allow you to clear any faults (Kind of like an OBD-II scanner used to clear a check engine light)

This is the cable I use between the RS232 (RJ12 6 pin phone jack) port and my computer.

This can be a variety of things, even possibly a loose connection. It would be best to call our tech support tomorrow at 725-699-0100 and we can get you the help you need!