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The solar charge controller is a critical component in your RV solar system. The controller maintains the life of the battery by preventing overcharging. When your batteries are low, the controller provides a full flow of current from your solar panels to replenish your battery banks. When your batteries achieve a 100% charge, the controller limits the current flowing from your solar panels to the batteries.
There are different types of solar charge controllers. While simple one or two stage controllers will shut off solar current when your battery is full, Pulse Width Modulated (PWM) controllers offer more functionality. They provide greater control of the current flowing from your solar panels and better ‘trickle charging’ of your batteries at an economical price. These controllers are good entry-level controllers for occasional use
Maximum Power Point Tracking (MPPT) controllers are more expensive than PWM, but provide a wider range of benefits. They are up to 30% more efficient than PWM and provide even more control and expandability options.
We suggest PWM controller with smaller, entry level solar setups, and MPPT for larger ones. As with most solar components, when choosing the right solar controller for you, it comes down to personal preference and practicality.
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