Choosing the Right Solar Charge Controller
The difference in MPPT, PWM, and basic diversion solar charge controllers
Jeff from Missouri Wind and Solar explains the differences and benefits of using various solar charge controller types. There are so many products on the market that it may be difficult to understand what you need to get the most out of your solar panels, or solar panel array. This video helps you save time and money in choosing the right charge controller the first time.
PWM - MPPT - Diversion Controllers
What does a charge controller do?
A charge controller prevents the incoming power source from over-charging the batteries. Once the charge controller senses that the batteries are full (based on the battery voltage) it will either disconnect or divert the power source. A typical
What types of solar charge controllers are available?
View the Basic Diversion ControllerBasic Diversion Controller
Inexpensive
Short lifespan
Great for beginner use
Function: Simply disconnects incoming voltage from solar panels when the batteries are full
View the PWM Charge ControllerPulse Width Modulation (PWM)
Moderate Price Range
Medium lifespan
Easy to use
May create interference in radios and TV’s
Great for intermediate solar knowledge
Special Feature: Pulse Width Modulation – the charge sends pulses to the batteries to constantly check the state of the battery voltage and will determine how fast to send pulses, and how long (wide) the pulses will be.
In a battery that is not fully charged, the pulses would be long and almost continuous while a fuller battery will have shorter pulses.
View the MidNite Solar Classic Charge Controller for SolarMultiple Power Point Tracking (MPPT)
Most expensiveIncreases solar panel efficiency
Longest life expectancy
Best for advanced solar users
Special Feature: Multiple Power Point Tracking – increases the output from solar panels by up to 30%, reducing the need for more solar panels.
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