Understanding RV Solar Power: Your Essential Guide to SolarFlex Systems

Introduction

Navigating the world of RV solar power can be overwhelming. Fortunately, we've partnered with experts at The Keystone Innovation Lab to address your most frequently asked questions. In this guide, you'll learn about solar power basics, the components involved in a solar system, and best practices for optimizing your RV's solar capabilities.

Solar Power Basics

What is solar power?
Solar power refers to the process of converting sunlight into electric power using photovoltaic cells.

What is needed for solar power?
To set up a solar power system, you'll need a solar panel, solar charge controller, batteries, and appropriately sized wires/cables with circuit protection (fusing).

Why do I need solar power?
Solar power replenishes your batteries without relying on shore power, converters, or generators.

Does solar power work at night?
No, a solar power system does not generate electricity after dark, though you can use the energy stored in your batteries.

Can I expand my solar power capability?
Yes! All SolarFlex systems are designed to be expandable, provided you have open roof space. Use a solar power calculator to determine your energy needs, then consult your Keystone dealer for expansion options.

How do I add solar power to my RV?
Most Keystone models come standard with or offer SolarFlex package upgrades. Options include the SolarFlex 220, 440i, 660i-L, and 1320i-L, which can be customized and expanded to suit your camping style. Visit www.keystonerv.com for more information.

What if it rains or is cloudy?
You have two options: 1) Manage your energy consumption to conserve battery power or 2) Recharge your batteries via shore power, a generator, or your tow vehicle (though this may not work for lithium batteries).

Solar Panels

What wattage should I expect?
In ideal conditions, a 200W panel can produce around 180 watts, while a 300W panel can produce approximately 270 watts. Actual performance can vary based on factors like the battery's state of charge, sunlight exposure, and cleanliness of the panels.

What maintenance is needed?
Maintain your system by keeping the solar panels clean and following Keystone's roof maintenance guidelines in the Owner’s Manual.

How do I clean my solar panels?
Use a wet rag and dry them with a soft cloth for optimal results.

Batteries

What batteries are recommended?
Lead Acid, AGM, and Lithium-ion batteries are all viable options for solar power applications.

What are the differences?

• Lead Acid: Oldest technology, economical but requires maintenance and has a shorter lifespan.
• AGM: Advanced lead-acid technology with a longer life span and quicker recharge time.
• Lithium: Premium battery technology with a longer lifespan, higher efficiency, and lighter weight.

Which battery type is better?
Lithium batteries are preferable for heavy usage, while AGM batteries may suffice for occasional users. Properly maintained lithium batteries can last 7-10 years.

Can I add more batteries later?
Yes, but ensure they are the same type and size as your existing batteries.

Can my RV battery charge from my tow vehicle?
This depends on your vehicle's alternator. Aftermarket products can help if charging while driving is a priority.

Inverter

What is the difference between a converter and an inverter?
A converter changes 120V AC to 12V DC, while an inverter transforms 12V DC from your batteries into 120V AC for your RV's outlets.

Are there different types of inverters?
Yes, there are stand-alone inverters and inverter chargers that can convert AC to DC for charging batteries.

Does my inverter need to be turned off when not in use?
It's best to turn it off during servicing and storage, but you can leave it on during normal use.

Solar Charge Controller

What is a solar charge controller?
This device regulates the energy from the solar panel to the battery, preventing overcharging by adjusting power based on the battery's state of charge.

Do I need to shut off solar controllers when plugged into shore power?
No, the solar system operates independently of shore power and prevents battery overcharging.

SmartShunt

What is a SmartShunt?
A SmartShunt monitors battery voltage and current, calculating the state of charge and time remaining before discharge.

How do I view information?
Connect to the Victron Connect app via Bluetooth to access real-time data on your battery's status.

Questions About Your SolarFlex Packages

Why can't I build my SolarFlex 220 to match the SolarFlex 440i?
The SolarFlex 440i has additional components that can't be easily added after purchase. However, you can enhance the SolarFlex 200 with extra solar panels and upgraded controllers.

Why can't I upgrade my SolarFlex 440i to match the SolarFlex 660i-L?
The SolarFlex 660i-L includes components not found in the 440i package. While upgrading is possible, it is more practical to choose the SolarFlex 660i-L during the initial build.

Contact Us

If you have more questions, feel free to contact us at Owner Relations.

Disclaimer: The information contained in this article is deemed to be true and accurate at the time of publication. However, due to the evolving nature of our products and services, there may be changes or updates that occur after this article was published. We encourage users to verify the contents and consult with their dealer or Keystone RV for the most current information. If you have any questions or require further clarification, please do not hesitate to contact your dealer or reach out to Keystone RV directly.