Best Overall · 1 of 5
Holdwell S 100W Portable Solar Panel Kit

- 100W, 25% efficiency, IP67
- 20A PWM controller with LCD
- Glass panel, adjustable stand
Our take
The only kit with a controller display and an IP67 glass panel.
Why it made the shortlist
The Holdwell S is a 100W suitcase panel with A+ monocrystalline cells at up to 25 percent efficiency, a glass surface and an IP67 rating. Its 20A PWM controller has a backlit LCD and LED indicators, and the box includes an MC4 to bare wire cable and an alligator clip.
Compared with the DOKIO 100W kits, it adds an LCD and IP67 at a similar price.
Van and RV owners who like to check panel output at a glance will value it on a 12V battery. The suitcase fold sets up with an adjustable stand.
What works
- Backlit LCD on the controller
- Glass panel rated IP67
- Adjustable stand included
- Alligator clip and MC4 cable in the box
Watch out for
- PWM controllers are less efficient than MPPT
- Bulkier fold than the soft DOKIO panels
- The catch
- The folded suitcase is 2.4 inches thick and bulky to pack.






