Considering The Solar Controller Options – MPPT VS PWM

People have several different reasons to think about when it comes to installing a solar system, from merely planning to keep the starter battery completely topped up between visits to other reasons or even wanting to reduce shore power usage. The greatest benefit of having a solar panel installed at your place is to have free electrical support for your leisure batteries.

Morningstar-Prostar-PS30-Solar-Charge-Controller.jpg (300Ã?300)

Before you opt for a solar controller, it is imperative that you choose the right solar controller for your own use. For a great peace of mind, make sure you work on the fundamentals that every solar panel setup requires a controller. Batteries are costly and do not deserve to be damaged via overcharging. A low-end charge controller is not costly and will make sure that your battery is not overcharged, and just as crucial, it will make sure that there is no back voltage to the solar panels when the panel does not generate power. The two most common charge controllers are MPPT (Maximum Power Point Tracking) and PWM (Pulse Width Modulator). Each of these have their own traits

SolarEpic-MPPT-40A-Solar-Charge-Controller.jpg (300Ã?300)

Affordable PWM solar controllers are quite good but not very efficient to use. They just work as a high-speed electronic switch. They basically operate by fluttering on and off quite rapidly and the speed of switching basically helps control the voltage level that is delivered to the battery. If you are looking for a starter battery while you are away from the RV or boat, opting for a 15 or even 20-watt panel wired through a 10-amp controller will do what you are looking for. Having the same panel, without the use of the controller would damage your battery.

MPPT controllers, on the other hand, are extremely efficient. They are more expensive compared to the PWM’s. Depending on the size of your boat, you perhaps be limited to just four leisure batteries. It would certainly cost you more to replace them.  Having an MPPT 75/15 solar controller costs less than a single battery. This would go a very long way without damaging your batteries.

Renogy-Rover-20A-Solar-Charge-Controller.jpg (300Ã?300)

If you considering keeping a starter battery that works all year round, opt for a small panel and a PWM solar charge controller.  If you are looking for an expensive and crucial bank of batteries – choose MPPT!