I have SOK 206 lithium with Victron shunt, monitor and charge controller. I manually set SOC to 100% when the charge controller stopped charging and voltage was at max. But now 5 days go by and the monitor never shows 100% but instead keeps dropping slightly each day. No loads except normal parasitic ones, 3 - 100 watt panels, the solar coming in shows it should reach 100% each day but instead it just keeps showing SOC dropping. Why? And what am I missing or not doing correctly?Image Caption