Advice needed my 2022 bailey caravan is fitted with a truma 100w solar panel i'v changed my battery over from lead acid to lithium 110amp battery we do 90% off grid caravaning all year round and was thinking of adding another 200w panel to the roof so in total 300w on the roof is it an easy upgrade just conecting the two panels into just one and then down to my 30amp solar regulator thankyou for any advice