Hey everyone! I'm currently working with a 16s LiFePO4 battery setup (51.2V, 280Ah) and using a PV panel rated at 50V and 14A. I'm trying to figure out the maximum input current for my system. I have plans to switch to a 4s2p configuration with PV panels capable of producing 200V and 28A. Is that going to be too much for the Victron MPPT 250/100 to handle? I heard it's best to limit the input to around 80% of the maximum.
1 Answer
The maximum input current isn't always specified directly because the input voltage from the panels usually exceeds the output. For a 48V nominal system, if you're looking at the 100A charge controller rating, you're looking at a total of around 4800W available from your array. To precisely calculate how many panels you can use, you need to know the lowest temperatures in your area as well as the voltage and current ratings of your panels, specifically Isc and Voc. If you share those details, I can help with the calculations!