Is the new 522 better adhesive than the old 521 Sika Flex? I am about to fit an additional solar panel to give me 200watt in total for now. The factory fitted 80watt from Auto sleeper is just not powerful enough, the new 120watt panel will replace the 80watt original panel so that it fluctuates between Leisure and Vehicle batteries via the ECU500 and the original 80watt panel will have a feed through a new MPPT controller to the leisure batteries. Anyone done this sort of thing?
Could even fit an extra 100watt next year if needed, see what happens.
Job completed and used the new Sika Flex 522 and MPPT controller.
Edited because I forgot to mention the fact that my new 120watt panel required the extra space to fit it, so had to remove the original 80watt panel and fit elsewhere, why didn't Autosleeper make use of the larger space? Anyway job done and everything ticketyboo.