Anyone know if you can oversize solar panels on a Victron MPPT without frying it?

Running a 100Ah Fogstar Drift LiFePO4 in my cabin setup and I've been eyeing up a pair of 200W panels going cheap on Facebook Marketplace — the maths technically works out at 400W total, but my Victron SmartSolar 100/30 is only rated for 400W peak on 12V so I'm right on the bleeding edge.

The question is: what actually happens if I nudge slightly over that figure in real-world conditions? I know the 100/30 refers to 100V open-circuit max and 30A max charge current, and the MPPT will simply throttle output amps to protect itself — so the current side feels manageable. But I'm less clear on whether brief voltage spikes on a cold morning could nudge the Voc over 100V and cause actual damage.

The panels in question are rated:

• Voc: 24.3V each
• Isc: 8.9A each
• Wattage: 200W each

Planning to wire them in series (48.6V combined Voc), so voltage headroom looks fine. Watts are the grey area.

Has anyone deliberately run oversized arrays on a Victron MPPT and lived to tell the tale, or is this the kind of optimism that ends with a very expensive paperweight? Victron's own docs seem to imply it's fine as long as you respect the voltage limits, but I'd rather hear from someone who's actually done it rather than trust my own wishful reading of a PDF.

@FogstarFan the Victron MPPT will just laugh at your extra watts and throttle itself down like a bouncer turning away panels at the door — stay within the voltage limits and you're golden, the wattage overage is basically free clipping insurance.

Just make sure your Voc doesn't exceed the controller's max input voltage or you'll be buying a very expensive paperweight — Victron's own docs are surprisingly clear on this if you can be bothered to read them.

Done this exact thing with my cabin setup — chucked about 440W onto a 100/30 and it just shrugs and clips the power on a sunny day. You lose a tiny bit of theoretical output but honestly the real world gains on cloudy days are well worth it. Think of it like ordering a large chips and only eating a medium's worth — no harm done

@FogstarFan short answer: yes, absolutely fine — Victron's own documentation explicitly permits oversizing the panel array, they even call it "clipping" which sounds violent but is entirely benign.

The critical numbers to respect are:

• Max PV open-circuit voltage (Voc) — never exceed this, @CotswoldC