20 watts is a pretty powerful output for an RV Solar panel!
20 watts of solar can replace about 12 Ah in a 10 hour solar day. This can really help get your RV battery charged back up. While it will not allow unrestricted use of power, it will certainly help when you take your RV out dry camping.
Outside Supply customer's often look at the 20 Watt solar panel to be able to charge batteries back from dead. This small almost unbreakable panel can really help bring a battery back. It will not completely recharge a battery in 1 day, but in 2 or 3 solar days you may be able to start an RV using a battery that was completely dead. You can also add more panels in parallel to increase wattage. Just remember to keep the panels at 12 volts.
You will need a charge controller with this panel to keep from overcharging your batteries.
