I am planning to add an additional solar panel to my trailer roof (shiny aluminum sheet). I am looking at a Bifacial 100 Watt Solar Panel with a Vmp of 18.15V. My current panels are traditional 100W mono panels with a Vmp of 19.23V. Please note that the new panel will be added in series for a system voltage voltage of 56V - my battery is 36V nominal and my MTTP charge controller can input up to handle 90V. Is there an issue mixing different Vmp and cell technology panels?