Yes, I know this is related to other questions/posts, but I need some clarity. I have four 340 watt (Hyundai HiS-S340Ti) panels, and 1120 ah 12 volt DIY battery (LiFePO4) on & in my travel trailer. My inverter/charger is the Victron MultiPlus II 120x2 12 volt, the charge controller is a Victron MPPT 150/100, and pretty much everything (except for the DIY batteries/BMS) is being managed by the Victron Cerbo GX. Yes, I wish I could have gone with a 24 volt system, but the MultiPlus II only comes in 12 volt, at this time - Victron, are you listening? With the four panels in full/direct sunlight in Arizona in mid March, I'm making 7.5 kwh per day, and consuming around 7 kwh/day - yeah, don't judge me :). I have the panels in a 2s/2p configuration. I want to add two additional panels, since it was my original plan and the cables are already up there - two of the six panels were destroyed in shipping. But, I'm concerned about the max wattage limitation of the MPPT (1450 for a 12 v system). I realize I'll only be clipping/exceeding capacity at the peak of the day when the sun is high in the sky provided I'm in a very clear and sunny environment - and that it a real possibility from time to time. Most of the time, it will stay under that - especially on cloudy days (excluding cloud edge effect), and in places where I have some blockage. Currently, at the peak of the day in AZ, I'm generating just over 1000 watts - Vmax around 85 volts. I just want to be able to keep the system breaking even, or providing a net gain, when I'm in the forest and/or experiencing a lot of clouds. At present, like I mentioned, I'm making only slightly more (about .5) kwh more than I'm consuming in an almost ideal solar generation environment. That said, how big of a risk of destroying something would I be taking by adding the two additional panels in a 2s/3p array? I'm considering getting/making a cover for the extra two panels, when I feel there might be a risk of exceeding capacity, but I'm sure I might miss/forget to put it on occasionally. So, again, how much of a risk would I be taking to add the two additional panels? How fragile are these MPPT charge controllers? Do they frequently burn out when input exceeds the max wattage?
