Will the Rich Solar MEGA 200 PRO FLEX (24V) work with the EcoFlow DELTA Pro Ultra X?
No. Open-circuit voltage 40.8V is below the 80V minimum for this input, so it will not start charging. Two panels: works, with a catch (2 panels in series on High-PV), about 400 W.
Don't connect
Do not plug this in. Open-circuit voltage 40.8V is below the 80V minimum for this input, so it will not start charging.
- Open-circuit voltage 40.8V is below the 80V minimum for this input, so it will not start charging.
- A 24 V panel: 40.8 V open circuit on its own, so two in series only suit high-voltage solar inputs.
200 W, open-circuit 40.8 V, short-circuit 6.2 A, working 34.2 V / 5.9 A. Brand page Panel details
EcoFlow DELTA Pro Ultra XSolar input High-PV: 80 to 500 V; High-PV: 80 to 500 V, 10000 W max. Brand page Station details
Change the count or temperatureTwo panels: every way to wire them
| Wiring | Input | Volts at 20F | Amps | Watts | Verdict |
|---|---|---|---|---|---|
| 2 panels in series on High-PV Working voltage 68.4V is below the 80V minimum, so charging may drop out in weak light. | High-PV | 89.4 | 5.9 | 400 | Works, with a catch |
| 1 panel on High-PV + 1 panel on High-PV Open-circuit voltage 40.8V is below the 80V minimum for this input, so it will not start charging. | High-PV + High-PV | 44.7 | 5.9 | 0 | Don't connect |
| 2 panels in parallel on High-PV Open-circuit voltage 40.8V is below the 80V minimum for this input, so it will not start charging. | High-PV | 44.7 | 11.7 | 0 | Don't connect |
Quick answers
Will the Rich Solar MEGA 200 PRO FLEX (24V) work with the EcoFlow DELTA Pro Ultra X?
No. Open-circuit voltage 40.8V is below the 80V minimum for this input, so it will not start charging. Two panels: works, with a catch (2 panels in series on High-PV), about 400 W.
Can I connect two MEGA 200 PRO FLEX (24V) panels to the DELTA Pro Ultra X?
Yes, 2 panels in series on High-PV. That gives about 400 W, with one catch: Working voltage 68.4V is below the 80V minimum, so charging may drop out in weak light..
Is it safe on a cold morning?
Panel voltage rises in the cold. One MEGA 200 PRO FLEX (24V) goes from 40.8 V on its label to about 44.7 V at 20°F and 46 V at 0°F. The DELTA Pro Ultra X accepts up to 500 V on the High-PV.
Where to buy
We may earn a commission if you buy through these links. It never changes a verdict.
- EcoFlow DELTA Pro Ultra X: solar input 80 to 500 V on the Solar in 1 (High-PV). EcoFlow sets this limit on open-circuit voltage (Voc), so we hold the panels' Voc on your coldest morning to it.
- Cold raises panel voltage: we add 0.30% per °C below 77F (25°C), a typical figure, since this panel does not publish its own. At 20F one panel's 40.8 V becomes 44.7 V.
- Current over the 15 A cap is safe: the station takes 15 A and you get fewer watts. We count only the capped watts.
- Max 5,000 W on this input, 10,000 W across all inputs.
- Cold-morning voltage uses 0.30% per °C, typical for crystalline panels. This panel's own value is not published.
- Expected watts are the best case in full sun. Real-world midday output is usually 60 to 80% of that.