PRODUCT DETAILS
The Go Power! 20W Eco Solar Kit is a battery maintainer: a 20W monocrystalline panel, a 10A PWM charge controller, cables and mounting hardware that keep a stored RV, trailer, boat or equipment battery full and healthy. It returns about 6Ah a day in summer (2Ah in winter) — enough to offset the parasitic draws of a parked coach (propane detector, stereo memory, control boards) and prevent the sulfation that kills lead-acid batteries in storage. 10-year panel warranty, 5-year controller warranty and a North American support team (part of Dometic).
Built to the standard RV manufacturers install
Go Power! has designed mobile power since 1996 and is the solar brand fitted at the factory by Jayco, Forest River, Thor and other leading RV builders. The panels, controllers, cabling and mounting feet in this kit are the same parts those plants install on solar-equipped coaches, so the kit matches factory wiring and the Go Power! systems already on the road. Part of Dometic.
Storage insurance
A parked RV draws 0.1–0.3A around the clock; over a winter that flattens a battery. Twenty watts of solar through a three-stage controller replaces that draw and holds the bank at float. The controller's lithium, AGM, gel and flooded profiles protect whichever battery you have, and the 10A rating leaves room to add a larger panel later.
Further reading: How much solar keeps a stored RV battery full — 10W vs 20W, region by region.
FEATURES
- 20W monocrystalline panel — 17.5V rated, 21.6V open circuit, 13.6 × 18.5 in, 4 lb.
- 10A PWM controller (GP-SB-PWM-10) — LCD, lithium/AGM/gel/flooded profiles, flush or surface mount.
- ≈ 6Ah per day in summer, ≈ 2Ah in winter — offsets parasitic draws and storage self-discharge.
- Two 25 ft #10 AWG solar cables (red and black) and mounting hardware included.
- 10-year panel warranty, 5-year controller warranty, North American support team (part of Dometic).
- Outlet pricing — brand new, limited quantities.
WHAT IT RUNS
SPECIFICATIONS
- Length:
- Width:
- Height:
- Weight:
| Model / SKU | GP-ECO-20 / 73837 |
|---|---|
| Panel Wattage | 20 W monocrystalline |
| Rated Voltage / Current | 17.5 V / 1.14 A |
| Open-Circuit Voltage | 21.6 V |
| Short-Circuit Current | 1.21 A |
| Controller | GP-SB-PWM-10, 10 A PWM, 12 V, LCD |
| Battery Profiles | Lithium, AGM, Gel, Flooded |
| Max Array on Controller | 200 W @ 12 V |
| Typical Daily Harvest | ≈ 6 Ah summer / ≈ 2 Ah winter |
| Cables | 2 × 25 ft #10 AWG (red, black) |
| Panel Dimensions | 13.58 × 18.50 × 0.98 in (345 × 470 × 25 mm) |
| Panel Weight | 3.97 lb (1.8 kg) |
| Frame | Clear anodized aluminum |
| Panel Warranty | 10 years limited power output |
| Controller Warranty | 5 years |
COMPARE MODELS
MANUALS, SAFETY INFORMATION AND DOWNLOADS
ACCESSORIES
FAQ
What can a 20W solar kit do?
Maintain a battery, not power a camp. It replaces the 2–6Ah a day a parked RV, boat or tractor draws in standby and keeps the battery at full charge through the off-season. For lights and fans on trips, start at 80W; for a fridge, 200W.
Why include a 10A controller with a 20W panel?
Any panel over about 5W needs a controller to avoid overcharging, and the 10A unit gives you room to add up to 200W later without replacing it.
Will it charge lithium batteries?
Yes. The included controller has a selectable lithium (LiFePO4) profile as well as AGM, gel and flooded settings. Set the battery type once at installation.
Flat mount or tilt?
Flat is what RV manufacturers do and it is fine for most owners: simplest, lowest drag, no wind loading. Tilting toward the sun adds 20–30% in spring and fall; the adjustable tilt mount kit under Accessories makes that optional.
Does shade matter?
Yes — a shadow on one cell can cut a panel's output by half or more. Mount away from the air conditioner shroud, antennas and vents, and park with the panels clear of trees when you can.
Is Go Power! the solar installed in my RV from the factory?
Very likely, if your coach is a Jayco, Forest River, Thor or many other brands. Go Power! has supplied RV manufacturers since 1996, so this kit uses the same panels, controllers and connectors as factory solar-prep and solar-equipped coaches.
What's the warranty?
The 20W panel carries a 10-year limited power-output warranty and the controller a 5-year warranty, backed by a North American support team (part of Dometic). Register the product after purchase.