Callsun 200W (2 x 100W) 2-Pack
#16 in 150 W and upFull review
A good-value pair of compact 100 W panels for a van, small RV or boat where roof space comes in odd shapes. Pair it with an MPPT controller to get the full output.
Amazon $129.99$129.99
The Callsun 200W (2 x 100W) 2-Pack is the better rigid solar panel overall, rated 4.3 to 2.9. The Callsun 200W (2 x 100W) 2-Pack leads on durability, value and efficiency. The Callsun 200W (2 x 100W) 2-Pack costs $7.73 less ($129.99 vs $137.72).
Newpowa 150W 12V Mono
#59 in 150 W and upFull review
A middle size for a 12 V system where a 100 W panel is too little and a 200 W panel won’t fit. Buy it from Newpowa’s own store, where it costs less than on Amazon.
Amazon $162.99 Newpowa $137.72$137.72
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 Callsun 200W (2 x 100W) 2-Pack for durability (IP68, 10-year warranty vs no IP rating, 2-year warranty), value ($0.65 per rated watt vs $0.92 per rated watt) and efficiency (21.9% module efficiency (from size and rated power) vs 20% module efficiency (from size and rated power)).
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 | Callsun 200W (2 x 100W) 2-Pack | Newpowa 150W 12V Mono |
|---|---|---|
| Overall rating | 4.3/5 | 2.9/5 |
| Value 45% | 81 $0.65 per rated watt | 55 $0.92 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 | 7 no IP rating, 2-year warranty |
| Efficiency 15% | 78 21.9% module efficiency (from size and rated power) | 40 20% module efficiency (from size and rated power) |
Specifications
| Callsun 200W (2 x 100W) 2-Pack | Newpowa 150W 12V Mono | |
|---|---|---|
| Output | ||
| Rated power | 200 W | 150 W |
| Module efficiency | 21.9% (rated power over panel area) | 20% (rated power over panel area) |
| Claimed efficiency | 25% (as published on Callsun's product page and Amazon; the user manual's table gives 25.6% cell efficiency) | 22.6% (datasheet "maximum efficiency" (not labeled cell or module)) |
| Cells | Monocrystalline (N-type, 16BB) | Monocrystalline (10BB, 182 mm cells, 60 cells) |
| Bifacial | No | No |
| Electrical | ||
| Open-circuit voltage (Voc) | 26 V | 20.4 V |
| Voltage at max power (Vmp) | 22.7 V | 17.4 V |
| Short-circuit current (Isc) | 4.6 A | 9.1 A |
| Current at max power (Imp) | 4.4 A | 8.6 A |
| Voc temperature coefficient | -0.2%/°C | -0.4%/°C |
| Series / parallel | Yes | - |
| Connections | ||
| Output connector | Solar connectors | Pre-attached 3 ft leads with male/female solar connectors |
| Build | ||
| Weight | - | 18.5 lb (8.4 kg) |
| Dimensions | 31.1 x 22.8 x 1.2 in (each panel) | 38.6 x 30.1 x 1.4 in |
| Frame | anodized aluminum alloy | anodized aluminum |
| Glass | 3.2 mm tempered | low-iron tempered |
| Junction box rating | IP68 | - |
| Warranty | 10 years | 2 years |
| Output warranty | 84.5% output after 25 years | 90% output for 10 years, 80% for 25 years |