I'm trying to charge my Pecron E2400LFP solar generator with a 100-watt solar panel, but I'm hitting some voltage issues. The panel's open circuit voltage sits at 22V, which is too high for the generator's 100W port (which maxes out at 18V) and too low for the 700W port that goes up to 95V. I have a Victron 75/15 MPPT charge controller. Is it possible to connect my panel to the Victron, set it to a voltage/current that fits within the Pecron's limits, and then use the Victron's load or battery output to charge the Pecron?
2 Answers
Could you share the datasheet for your solar panel? It would help in figuring out the best approach to connect it.
Most MPPT controllers need to detect a battery before they start charging, so just connecting the solar panel directly to the Victron might not work unless there's a battery in the setup. You could consider using a 12V regulator as an alternative, but honestly, I’d suggest just getting another 100W panel to put in series. Trying to charge a 2kWh battery with a single 100W panel might be a bit too slow anyway.
I couldn't find the exact datasheet, but it's a NewPowa NPA100S-12L. It has a max power of 100W, Vpm of 19.23V, Imp of 5.21A, Voc of 22.12V, and Isc of 5.50A.