What size controller should I use with a 10w monocrystalline solar panel

How to choose a solar charge controller?

However, MPPT charge controllers also have a Maximum Input Voltage rating, which indicates the maximum amount of voltage (in Volts) that is acceptable at the input of the MPPT. So, when selecting your solar charge controller, you should account for both current and voltage.

How much current does a solar charge controller need?

In other words, we calculate how much current the solar charge controller needs to be able to put out by using this simple formula: MPPT amperage rating = (Max. System Wattage) / (Min. Battery Charging Voltage)

What size charge controller do I Need?

Charge controllers are sized depending on your solar array's current and the solar system’s voltage. You typically want to make sure you have a charge controller that is large enough to handle the amount of power and current produced by your panels. Typically, charge controllers come in 12, 24 and 48 volts.

What is the power rating on a solar panel?

This is the power rating that is indicated on the back of the solar panel. 500W solar / 12V battery = 41.6A charging current -> 40A charge controller 500W solar / 24V battery = 20.8A charging current -> 20A MPPT charge controller 500W solar / 48V battery = 10.4A charging current -> 10A MPPT charge controller

What is the difference between PWM and MPPT solar charge controllers?

Normally, due to the increased circuitry, MPPT solar charge controllers will be physically larger than PWM solar charge controllers. Properly wired, it is possible to add multiple solar chargers (any combination of type and rating) to charge a battery.

Do camping solar panels need a PWM charge controller?

Camping solar panels might only require a PWM charge controller due to the limited use and power output required. MPPT charge controllers are generally your only choice when dealing with higher voltage systems. They’re basically only suited for portable use. You would never use a PWM charge controller for a home or cottage.