If the Common port BMS sees a condition that disconnects the battery from its output won't that cause the SCC to be disconnected from the battery and allow the solar panels to damage the SCC? If you make a secondary connection directly to the battery bypassing the BMS connection that will assure a power source to the SCC so as not to damage the SCC from a solar panel connection without power to the battery connection of the SCC, but won't that also allow the solar panels via the SCC to supply a charging current to the battery even if the low temp cutoff of the BMS activates? Seems to me you are either risking damage to the SCC if the BMS disconnects power or you are risking damage to the LiFePO4 battery if the temperature drops below 0 C and you have a direct connection from the SCC with no protection from the BMS. Is this correct or am I missing something here?