Mercracing
New Member
I have eight SOK 48V batteries (two racks of four batteries 1-4 and 5-8 with one set of cables per bank to the inverter. All cables are identicalin length) connected with communications to Sol-ark 15K. The batteries have been in service six months at this point. Starting 02/07 the report SOC on the Sol-Ark has stopped reaching 99-100% and then sending power back to the grid. Each day the SOC has stopped at a lower percentage and stayed there for the day. As of yesterday it stopped at 95%. I have looked at the batteries and four of them showing a lower achieved SOC per day (#4, #5, #6, #8), number four for example stopped at 91.67% yesterday. The individual pack voltages are very close as are the cell mV readings. The max spread on pack cycles is 70-80. I have logged quite a good deal of data from the batteries if it would help.
I would appreciate any advice on how to interpret the data and how to correct this situation.
Thanks
Ryan
I would appreciate any advice on how to interpret the data and how to correct this situation.
Thanks
Ryan