I am using ESS mainly for backup, but have 1000W of solar as well and want to use it effectively. I have feed-in disabled and don't want to feed the grid. I have a grid limit of 300W set to minimize overshoots that feed the grid. My lowest normal consumption is 350W at night, average is about 600W and peak can be around 4000W. I am using mode set to "Optimize w/o BatteryLife", but have also tried it with BatteryLife. I have tried Peak Shaving set to "Always" and also "Above SOC". I have tried minimum SOC settings of 90, 95 and 100%. I am currently using 100%. To avoid hitting the battery limit, I have my SmartShunt set so that 54.0V is 100% SOC. I do not have BMS. These settings seem to work well except for one major issue... I have had a number of "Low battery" and/or "High DC Ripple" alarms, and two that shut down the output. These come with no warning, and with nothing dynamically happening with the load. The battery was above 53V in both cases, and generally always is. I checked all my cabling and everything seems fine. Any suggestions on the best way to utilize the PV and still keep the battery charged would be welcome. It doesn't have to 100% charged. I only tried that setting because of the low battery alarms when set lower, but it didn't improve things in that regard.