Rich Solar MEGA 250
#47 in 150 W and upFull review
A strong single panel for a 12 V RV, van or boat roof where space is tight and the controller is PWM. Buyers with room for two panels can get the same power for less.
Amazon $269.99$269.99
The Rich Solar MEGA 250 is the better rigid solar panel overall, rated 3.6 to 3.3. The Rich Solar MEGA 250 leads on durability.
ACOPOWER 250W Bifacial N-Type
#51 in 150 W and upFull review
For an RV, cabin or ground mount with room for a 61 in panel and an MPPT controller. The bifacial back helps most when the panel is tilted above a light surface.
Amazon $269.80$269.80
Prices were last checked October 26, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Rich Solar MEGA 250 for durability (IP68, 10-year warranty vs IP67, 5-year warranty).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 150 W and up rigid solar panel; a clear win is highlighted. How we rank explains each one.
| Factor weight | Rich Solar MEGA 250 | ACOPOWER 250W Bifacial N-Type |
|---|---|---|
| Overall rating | 3.6/5 | 3.3/5 |
| Value 45% | 40 $1.08 per rated watt | 40 $1.08 per rated watt |
| Tested output 15% | 50 not yet independently tested (neutral score used) | 50 not yet independently tested (neutral score used) |
| Durability 25% | 100 IP68, 10-year warranty | 67 IP67, 5-year warranty |
| Efficiency 15% | 68 21.4% module efficiency | 62 21.1% module efficiency (from size and rated power) |
Specifications
| Rich Solar MEGA 250 | ACOPOWER 250W Bifacial N-Type | |
|---|---|---|
| Output | ||
| Rated power | 250 W | 250 W |
| Module efficiency | 21.4% | 21.1% (rated power over panel area) |
| Claimed efficiency | 25.1% (maximum cell efficiency; datasheet module efficiency 21.4%) | 25.4% (cell efficiency (the datasheet headline says maximum cell efficiency; its table labels it module efficiency)) |
| Cells | Monocrystalline (N-type TOPCon, 16BB, half-cut, 64 cells) | Monocrystalline (N-type TOPCon, 16BB, 128 cells) |
| Bifacial | No | Yes |
| Electrical | ||
| Open-circuit voltage (Voc) | 22.8 V | 44.8 V |
| Voltage at max power (Vmp) | 18.9 V | 38.4 V |
| Short-circuit current (Isc) | 13.7 A | 7 A |
| Current at max power (Imp) | 13.2 A | 6.7 A |
| Voc temperature coefficient | -0.3%/°C | -0.3%/°C |
| Series / parallel | Yes | Yes |
| Connections | ||
| Output connector | Solar connectors (IP67) | MC4, 12 AWG leads |
| Build | ||
| Weight | 26.9 lb (12.2 kg) | 26.3 lb (11.9 kg) |
| Dimensions | 60.6 x 29.9 x 1.2 in | 61.0 x 30.1 x 1.4 in |
| Frame | anodized aluminum alloy, 1.3 mm | black anodized aluminum alloy |
| Glass | 3.2 mm AR-coated tempered | 3.2 mm AR-coated tempered |
| Junction box rating | IP68 | IP67 |
| Warranty | 10 years | 5 years |
| Output warranty | 25-year limited power output warranty | 25-year power output warranty |
| Released | 2024-10 | - |