My 12v lithium battery was fully charged and showed 100% SOC when I connected loads. No chargers was connected in a 14 hour period. This morning soc was 77% with about 25 amps consumed. I connected my 240w solar panel this morning. (Using a 12v 30amp Victron mppt)It is overcast and changing at a net positive current of 2amp (27w) Within minutes of connecting the solar panel the soc shows 100%. This should not be? Can someone advise.