How it works | System Components

Charge Controller

What is it?
A charge controller is a device that regulates the amount of electricity coming in from your solar panels as they charge your batteries. If your batteries get too much power, they can be badly damaged.

Many modern charge controllers also use a highly sophisticated technology called Maximum Power Point Tracking. This handy addition to the controller helps to maximise the total power from your panels by constantly changing the voltage and amperage (by small amounts) that is coming in from the solar panels. In essence, they find the 'sweet spot'. In industry tests, charge controllers with MPT can give up to 30% more power to your batteries than a charge controller that doesn't.

All of our systems include charge controllers with Maximum Power Point Tracking.

Some controllers also include a display screen to show system performance.

How will it be installed?
The charge controller is mounted inside an enclosure box or dust-free weather-proof room along side the other system components such as the inverter and protection circuit breaker boards.

How long does it last?
Though small, the charge controller is a hard-working device. It is doing its job everyday that your panels are in the sun. If treated well and repaired when needed, a charge controller could typically last for 10 - 15 years. Depending on brand and capacity, they can carry warranties of between 1 and 5 years..

More info...
Even the smallest of cabin size systems should never be wired without a charge controller. If too much energy is going into the batteries, they have the potential to leak acid, overheat and start a fire or sometimes even explode! Always use a charge controller and ample circuit protection.