MPPT vs PWM & Sizing

Sizing and Choosing Your Victron Controller

MPPT harvests 15–30% more energy than PWM in real-world conditions, which usually justifies the price difference on anything over ~200W. Size a controller by PV open-circuit voltage (the SmartSolar 100/30 accepts up to 100V PV Voc) and charge current — roughly 290W of panels at 12V, 580W at 24V, and 1160W at 48V for a 30A unit. The 100/20 48V variant auto-detects 12/24/48V, unlike the standard 12/24V 100/20. SmartSolar models include Bluetooth natively; BlueSolar models can add wireless monitoring with a VE.Direct Bluetooth dongle, and the Smart Battery Sense shares battery voltage and temperature across multiple MPPT chargers via VE.Smart Networking.

How many watts of solar can a Victron 100/30 handle?

About 440W at 12V or 880W at 24V, with a 100V PV open-circuit voltage limit. Confirm your panel Voc at lowest expected temperature stays under 100V.

What's the difference between SmartSolar and BlueSolar charge controllers?

SmartSolar models have built-in Bluetooth for setup and monitoring via VictronConnect. BlueSolar models need a VE.Direct Bluetooth dongle (or VE.Direct to USB cable) for the same wireless features.

How do I get the best price on a Victron MPPT controller?

Compare current prices from $12.75 across the collection, look for sale and deal pricing on popular models, and stack code OUTPOST12 for 12% off eligible items at checkout.

Are these controllers suitable for small RV solar setups?

Yes — the 75/15 and 100/20 are popular affordable choices for small RV and van systems, with Bluetooth monitoring and LiFePO4-ready charge profiles.

12% offer ends today.

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