REC is a solar panel manufacturer known for high-efficiency residential modules. eMarine lists the REC Alpha Pure 2 Series REC420AA, a 420W full-size panel suited to off-grid homes and cabins, ground mounts, large RV roofs and larger boats with space for a full-size module.
How to use a full-size panel
A 420W module delivers a lot of power per panel, but it is large and runs at a higher voltage than small 12V panels. Check the dimensions against your roof or mount, and choose an MPPT charge controller whose PV input voltage covers the panel open-circuit voltage, especially with two or more panels in series. Full-size panels ship by pallet freight.
Can I use a 420W panel on a 12V system?
Yes, with an MPPT charge controller that steps the voltage down. See solar charge controllers.
Where can I compare other panels?
See solar panels.
Will the REC panel ship by parcel?
No. Solar panels ship by pallet freight to prevent damage in transit; shipping is quoted for pallet orders.