A solar charge controller also called a regulator, is an electronic device used in solar energy systems to protect the battery. Solar charge controllers are mainly used to keep batteries from overcharging and over-discharging. However, newer MPPT charge controllers can also decrease power production losses. In this article,…

PWM charge controllers are probably the most used type of solar charge controller in small off-grid systems. Compared to MPPT charge controllers – another type of solar charge controller- they are very cheap and accessible. In this article, I’ll explain what a PWM charge controller is, how it…

The PWM calculator below will tell you which PWM is best for your system based on the maximum current your solar panels can put out. All you have to do is enter a few details that describe your solar system and the calculator will display a link to…

MPPT charge controllers are expensive, but they are the best charge controller technology on the market. In this article, I’ll answer some of the FAQs about these devices. If there are any questions I haven’t answered, please feel free to ask in the comment section. What are MPPT…

MPPT solar charge controllers are rated in amps (Output Current). To select a charge controller, you’ll need to calculate the maximum amount of current (in Amps) that the MPPT should be able to output. This max output current value is calculated by dividing the maximum system wattage (in…

Solar charge controllers are rated in amps but are also limited by their maximum input voltage. To select the right MPPT charge controller for your system, you need to answer 2 questions: To make this guide more digestible, I will use the following system as an example: Solar…