Hi Chris.
Our panels are not flexible, but rather the fixed units which are on top of the van. They are Victron brand which we got from Trip Tracks (David Bellette).
I am not sure about the longevity of the flexible panels. Are they proving satisfactory? (I hasten that I add nothing about them).
But I do know it is always good to increase solar wattage and lithium capacity 😆
Chris(tine)
PS I can always give you David Bellette's contact details but am not sure if he supplies flexible panels.