HQST 100W 12V Rigid
#3 in Under 150 WFull review
The budget pick for a shed, gate opener, small cabin or ground mount where space isn’t tight. On a crowded van roof a smaller N-type 100 W panel is the better fit.
Amazon $49.99$49.99
The HQST 100W 12V Rigid and the Rich Solar MEGA 100 Slim are evenly matched, rated 3.8 and 3.7. The HQST 100W 12V Rigid leads on value. The Rich Solar MEGA 100 Slim wins on durability and efficiency. The HQST 100W 12V Rigid costs $70 less ($49.99 vs $119.99).
Rich Solar MEGA 100 Slim
#5 in Under 150 WFull review
The panel to buy when a van or RV roof only has a long, narrow gap to fill. Where a standard 100 W panel fits, it costs much less.
Amazon $119.99$119.99
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 HQST 100W 12V Rigid for value ($0.50 per rated watt vs $1.20 per rated watt).
- Choose the Rich Solar MEGA 100 Slim for durability (IP67, 10-year warranty vs IP65, 5-year warranty) and efficiency (19.7% module efficiency vs 17.7% 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 under 150 W rigid solar panel; a clear win is highlighted. How we rank explains each one.
| Factor weight | HQST 100W 12V Rigid | Rich Solar MEGA 100 Slim |
|---|---|---|
| Overall rating | 3.8/5 | 3.7/5 |
| Value 45% | 100 $0.50 per rated watt | 57 $1.20 per rated watt |
| Tested output 15% | 50 not yet independently tested (neutral score used) | 50 not yet independently tested (neutral score used) |
| Durability 25% | 51 IP65, 5-year warranty | 100 IP67, 10-year warranty |
| Efficiency 15% | 0 17.7% module efficiency (from size and rated power) | 34 19.7% module efficiency |
Specifications
| HQST 100W 12V Rigid | Rich Solar MEGA 100 Slim | |
|---|---|---|
| Output | ||
| Rated power | 100 W | 100 W |
| Module efficiency | 17.7% (rated power over panel area) | 19.7% |
| Claimed efficiency | 23% (cell efficiency, "up to") | 25.1% (maximum cell efficiency; datasheet module efficiency 19.7%) |
| Cells | Monocrystalline (9BB) | Monocrystalline (N-type TOPCon, 34 cells) |
| Bifacial | No | No |
| Electrical | ||
| Open-circuit voltage (Voc) | 24.3 V | 23.6 V |
| Voltage at max power (Vmp) | 20.4 V | 19.6 V |
| Short-circuit current (Isc) | 5.2 A | 5.4 A |
| Current at max power (Imp) | 4.9 A | 5.1 A |
| Voc temperature coefficient | -0.3%/°C | -0.3%/°C |
| Series / parallel | Yes | Yes |
| Connections | ||
| Output connector | MC4 | Solar connectors |
| Build | ||
| Weight | 14.3 lb (6.5 kg) | 12.4 lb (5.6 kg) |
| Dimensions | 31.8 x 27.5 x 1.18 in | 50.0 x 15.7 x 1.2 in |
| Frame | anti-corrosion aluminum alloy | anodized aluminum alloy |
| Glass | low-iron tempered | 3.2 mm AR-coated tempered |
| Junction box rating | IP65 | IP67 |
| Warranty | 5 years | 10 years |
| Output warranty | 95% output for 5 years, 90% for 10 years, 80% for 25 years | 25-year limited power output warranty |
| Released | 2026-08 | 2025-09 |