The Renogy 100W N-Type Suitcase (RSP100LSC) is the better portable solar panel overall, rated 4.4 to 3.9. The Renogy 100W N-Type Suitcase (RSP100LSC) leads on durability, features and efficiency. The FlexSolar S100 100W wins on portability and value. The FlexSolar S100 100W costs $55 less ($89.99 vs $144.99).
For owners of small power stations who value a sturdy, long-warranty 100 W panel from a major brand. Shoppers chasing the lowest price per watt or USB charging can do better.
Amazon $144.99A good pick for hikers and car campers who want 100 W-class solar that packs small and weighs about 4 lb. Anyone charging a bigger power station should look at a heavier panel with a stand and published electrical specs.
Amazon $89.99Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Each factor is scored 0-100 against the same fixed reference points for every small portable solar panel; a clear win is highlighted. How we rank explains each one.
| Factor weight | Renogy 100W N-Type Suitcase (RSP100LSC) | FlexSolar S100 100W |
|---|---|---|
| Overall rating | 4.4/5 | 3.9/5 |
| Value 30% | 91 $1.45 per rated watt | 100 $0.90 per rated watt |
| Tested output 20% | 100 not yet tested; estimated 91% of rated watts from 2 tests of Renogy panels and the median of the 11 tested panels | 33 best measured 70% of rated watts (1 test) |
| Portability 15% | 44 11.3 W per lb (8.9 lb (4 kg)) | 100 24.4 W per lb (4.1 lb (1.9 kg)) |
| Durability 15% | 100 IP67, 3-year warranty | 60 IP67 |
| Efficiency 10% | 97 24.8% claimed efficiency | 67 23% claimed efficiency |
| Features 10% | 55 built-in kickstand, series/parallel | 0 no kickstand, USB or bifacial cells |
No independent test published yet.
| Tested by | Measured peak | Of rated | Conditions |
|---|---|---|---|
| OutdoorGearLab | 70 W | 70% | OutdoorGearLab’s measured-watts figure from its charging test (70 W generated in one hour); panel lay flat, exact sun conditions not given |
| Renogy 100W N-Type Suitcase (RSP100LSC) | FlexSolar S100 100W | |
|---|---|---|
| Output | ||
| Rated power | 100 W | 100 W |
| Tested output | Not tested (estimated 91%) | 70 W (70%) |
| Efficiency | 24.8% (cell efficiency per Renogy's spec table, which lists module efficiency as 15.2%; marketing copy rounds it to 25%) | 23% (Amazon listing claims 23%+ conversion efficiency without saying cell or module; FlexSolar's own page gives no figure) |
| Cells | Monocrystalline (N-type, 16BB) | Monocrystalline |
| Bifacial | No | No |
| Electrical | ||
| Open-circuit voltage (Voc) | 21.6 V | - |
| Voltage at max power (Vmp) | 18.7 V | - |
| Short-circuit current (Isc) | 5.8 A | - |
| Current at max power (Imp) | 5.4 A | - |
| Series / parallel | Yes | - |
| Connections | ||
| Output connector | MC4 | - |
| Cables included | - | 2 m 4-in-1 DC adapter cable (Anderson, XT60, DC7909, DC5521) |
| USB ports | None | - |
| Build | ||
| Weight | 8.9 lb (4 kg) | 4.1 lb (1.9 kg) |
| Folded size | 20.6 x 24.6 x 1.6 in (523 x 625 x 40 mm) | 12.99 x 10.43 x 2.17 in (330 x 265 x 55 mm) |
| Unfolded size | 1048 x 625 x 20 mm | 45.47 x 26.18 x 0.59 in (1155 x 665 x 15 mm) |
| Folding sections | - | 10 |
| Kickstand | Yes | No |
| Water resistance | IP67 | IP67 |
| Warranty | 3 years | - |
| Output warranty | 3-year power output warranty | - |
