Two Go Power solar kits have similar names but very different contents. The OVERLANDER 200W package contains charging control equipment, while the OVERLANDER-E is a panel expansion for an existing controller. Compare the kit label and individual parts before ordering.
Follow the panel-to-battery system
A rigid solar module supplies DC power to the PWM controller. The controller manages charging of the RV's 12V battery. An expansion panel can add current through a matched pair of solar branch connectors when the existing controller, cables and roof wiring have sufficient capacity.
Identify the kit before replacing a component
| Component | OVERLANDER 200W kit | OVERLANDER-E expansion |
|---|---|---|
| 200W framed panel | Included, one panel | Included, one additional panel |
| 30A PWM controller | Included — GP-SB-PWM-30-BT in the listed kit; verify older units | Not included |
| Red and black 25-ft #10 solar cable | Included | Not listed as part of expansion package |
| Panel mounting parts | Included | Included |
| SC branch connectors | Check the packing list for this kit revision | Included for compatible parallel extension |
| RV battery, inverter, roof sealant | Not included | Not included |
The 200W framed module is specified at approximately 20.8V maximum-power voltage and 24.3V open-circuit voltage, with a nominal panel size of 59.1 × 26.3 inches. Go Power offers more than one Overlander panel generation, so the exact module marking and controller revision matter when combining panels.
Overlander kit and related part photographs
Complete kit and expansion panel
Replacement or separately needed roof parts
The following fittings are separate catalog products. A component listed inside a complete kit is not necessarily something a customer needs to buy twice.
SC expansion connector replacements
These exact branch models have opposite connector-gender arrangements. Their presence in our catalog does not establish that every Overlander kit generation uses the same connector body; compare the fitted plugs.
Original Go Power kit checklist and wiring drawing
Go Power's RV Solar Power Kits manual has an Overlander parts checklist and a separate Overlander + Overlander-E system diagram. Use its drawings for the positive and negative branching layout, panel grounding, rooftop entry and battery fuse placement. Compare the illustrated module generation to the label on your kit.
Go Power official kit parts checklist (PDF) · Overlander + expansion manufacturer diagram (PDF)