HQST has given this panel a nearly square body instead of the long rectangle most hundred-watt modules use, and the listing says it is about eleven percent smaller than a traditional unit. That shape helps on a van or trailer roof where the space is boxed in by vents and a skylight. The cells are 166mm Grade A+ with 100 percent electroluminescence inspection, which is a quality-control step that catches microcracks before shipping.
Its compromise is cell generation: nine busbars and a stated 23 percent efficiency are a rung below the N-type designs in the STAR and Rvpozwer panels. In real use that shows up as slightly faster decay and a bit less shade tolerance, not as a visible day-one gap. Wind and snow ratings of 2400Pa and 5400Pa match the standard rigid-module benchmark, which gives reassurance for a roof mount.
Ownership is straightforward. It is a bare panel, so budget a controller, MC4 extension leads and a fuse; the HQST name makes warranty claims easier than with no-name sellers. Bolt it through the pre-drilled frame holes with a sealant such as Dicor on each penetration and inspect the seal every spring.
What works
- Square body fits cramped roof layouts
- Cells carry 100 percent electroluminescence inspection
- 2400Pa wind and 5400Pa snow loading stated
- Established brand makes warranty claims simpler
Watch out for
- Nine busbar cells trail the N-type panels on shade tolerance
- Controller and cabling are separate purchases
Spec sheet
- Rated power
- 100W
- Cell design
- 166mm Grade A+, 9 busbar
- Size
- 31.8 x 27.5 x 1.18 in
- Wind and snow load
- 2400Pa and 5400Pa
- Sealing
- IP65 connectors and box






