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.
Price checked October 21, 2026. As an Amazon Associate we earn from qualifying purchases.
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
| Output | |
|---|---|
| Rated power | 200 W |
| Efficiency | 25% (as published on Callsun's product page and Amazon; the user manual's table gives 25.6% cell efficiency) |
| Cells | Monocrystalline (N-type, 16BB) |
| Bifacial | No |
| Electrical | |
| Open-circuit voltage (Voc) | 26 V |
| Voltage at max power (Vmp) | 22.7 V |
| Short-circuit current (Isc) | 4.6 A |
| Current at max power (Imp) | 4.4 A |
| Voc temperature coefficient | -0.2%/°C |
| Series / parallel | Yes |
| Connections | |
| Output connector | Solar connectors |
| Build | |
| Dimensions | 31.1 x 22.8 x 1.2 in (each panel) |
| Frame | anodized aluminum alloy |
| Glass | 3.2 mm tempered |
| Junction box rating | IP68 |
| Warranty | 10 years |
| Output warranty | 84.5% output after 25 years |
A rock-bottom-price pair of 100 W panels for a 12 V shed, boat or small off-grid setup. Buyers who want a documented panel from an established maker should pay a little more for Callsun or Renogy.
Amazon $80.99A low-cost 200 W panel for a 12 V van, RV or shed system, with a longer warranty than most budget brands. Buyers who want a well-documented panel from an established maker pay a little more for HQST.
Amazon $98.82A strong value for a 400 W ground mount, shed roof or large RV roof, and a good match for power stations with a 60 V solar input. Mostly sold as a pair on Amazon.
Amazon $319.99 Callsun $319.99More from Callsun: every Callsun product ranked.
