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
The ACOPOWER 250W Bifacial N-Type is the better rigid solar panel overall, rated 3.3 to 3.2. The ACOPOWER 250W Bifacial N-Type leads on value and efficiency. The Rich Solar MEGA 130 Slim 260W 2-Pack wins on durability. The ACOPOWER 250W Bifacial N-Type costs $60.19 less ($269.80 vs $329.99).
Rich Solar MEGA 130 Slim 260W 2-Pack
#54 in 150 W and upFull review
For van and RV owners whose roof only has long, narrow gaps to fill. Anyone with room for standard-width panels gets far more watts for the money.
Amazon $329.99$329.99
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 ACOPOWER 250W Bifacial N-Type for value ($1.08 per rated watt vs $1.27 per rated watt) and efficiency (21.1% module efficiency (from size and rated power) vs 19.7% module efficiency).
- Choose the Rich Solar MEGA 130 Slim 260W 2-Pack for durability (IP67, 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 | ACOPOWER 250W Bifacial N-Type | Rich Solar MEGA 130 Slim 260W 2-Pack |
|---|---|---|
| Overall rating | 3.3/5 | 3.2/5 |
| Value 45% | 40 $1.08 per rated watt | 22 $1.27 per rated watt |
| Tested output 15% | 50 not yet independently tested (neutral score used) | 50 not yet independently tested (neutral score used) |
| Durability 25% | 67 IP67, 5-year warranty | 100 IP67, 10-year warranty |
| Efficiency 15% | 62 21.1% module efficiency (from size and rated power) | 34 19.7% module efficiency |
Specifications
| ACOPOWER 250W Bifacial N-Type | Rich Solar MEGA 130 Slim 260W 2-Pack | |
|---|---|---|
| Output | ||
| Rated power | 250 W | 260 W |
| Module efficiency | 21.1% (rated power over panel area) | 19.7% |
| Claimed efficiency | 25.4% (cell efficiency (the datasheet headline says maximum cell efficiency; its table labels it module efficiency)) | 19.7% (module efficiency from the datasheet; no cell efficiency published) |
| Cells | Monocrystalline (N-type TOPCon, 16BB, 128 cells) | Monocrystalline (16BB, 32 cells) |
| Bifacial | Yes | No |
| Electrical | ||
| Open-circuit voltage (Voc) | 44.8 V | 22.1 V |
| Voltage at max power (Vmp) | 38.4 V | 18.1 V |
| Short-circuit current (Isc) | 7 A | 7.6 A |
| Current at max power (Imp) | 6.7 A | 7.2 A |
| Voc temperature coefficient | -0.3%/°C | -0.3%/°C |
| Series / parallel | Yes | Yes |
| Connections | ||
| Output connector | MC4, 12 AWG leads | Solar connectors (IP67) |
| Build | ||
| Weight | 26.3 lb (11.9 kg) | 34 lb (15.4 kg) |
| Dimensions | 61.0 x 30.1 x 1.4 in | 65.0 x 15.7 x 1.2 in (each panel) |
| Frame | black anodized aluminum alloy | anodized aluminum alloy |
| Glass | 3.2 mm AR-coated tempered | 3.2 mm AR-coated tempered |
| Junction box rating | IP67 | IP67 |
| Warranty | 5 years | 10 years |
| Output warranty | 25-year power output warranty | 25-year limited power output warranty |
| Released | - | 2024-11 |