Zendure SolarFlow 800 Fan Shroud

Hybrid solar devices throttle in summer heat. At maximum load the SolarFlow 800 Pro reaches housing temperatures of up to 63°C indoors at room temperature – outside in direct sunlight it gets worse. This two-piece snap-on shroud sits on top of the SolarFlow 800 Pro, channels airflow via the Venturi effect across the heatsink fins, and keeps temperatures where they belong.

The SolarFlow's built-in fan port delivers temperature-controlled voltage: 7V from ~35°C, rising to 12V at higher temperatures, with up to 0.3A available. A standard 80mm 1.2W fan connects directly – no extra power supply needed.

What you need

• 1× 80mm PC fan (12V, max 1.5W)

• 4× fan screws + 1× 80mm fan grille

• 2× M4×8mm pan-head screws (rear mounting)

• 1× cable tie for strain relief

• 1× waterproof M12x1 (I think!) connector for weatherproof connection to the fan port

Installation The two-piece shroud simply lays on top of the device and is secured at the rear with 2× M4×8mm pan-head screws. Mount the 80mm fan with fan screws and grille. Route the cable through the hole and solder M12 connector for a weatherproof outdoor connection. Secure with a cable tie as strain relief.

Compatibility

✅ Zendure SolarFlow 800 Pro (349.7 × 201.7 × 340 mm)
❌ SolarFlow 2400 Pro – different housing (326 × 294 × 251 mm)
❌ SolarFlow 800 / 800 Plus – different form factor

Print settings

• Material: PETG or ASA (outdoor/UV – PLA will not survive summer)

• Infill: 15–30%

• Layer height: 0.2–0.3mm

• Supports: No

Designed by someone who watched their inverter throttle on a perfect sunny day and decided that was unacceptable.

Thanks to Michael, who reverse engineered the connector.

If you print it, please provide feedback on how tight the latches are - I did tweak the tolerances after my print. Afterwards, I'll update the files here (thus temporarily CC BY-NC-ND 4.0)