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How to choose a Solar Charge Controller

How to choose a Solar Charge Controller

In an era where alternative energy sources gain more ground, it is wise to learn about them in order to make good use of them in order to cut the costs of the regular means and contribute more towards being environment-friendly. One of these is solar power, which can be utilized via photovoltaic systems. These are battery-based, so choosing an appropriate charge controller is a key factor to an efficient and durable solar kit. What it does is help in protecting your batteries from unwanted damages, replacements, and other costs, as well as ensure that they are properly, fully and safely powered.

How Solar Works

Solar Charge Controller:

Firstly, without an intermediate between the battery and the energy captured by solar panels, the batteries would receive an overflow of power and break down, or worse: explode. Surely, this is a paramount reason as to why you would want to make absolutely sure that the middle-party you opt for is bound to play its role.
Secondly, a solar charge controller helps in keeping any power from flowing back into the panels - in other words, it also acts as a “leak”-stopper. And last, but not least, the controller can monitor the voltage in a battery and keep it from being too low (when it drops under a certain level, the controller disconnects the battery from the system, so another, the better-charged unit can be utilized and the former kept from being drained). That is because depleting a battery completely results in a loss in effectiveness in the long run.

There are various types of such intermediaries, such as PWM (pulse-width modulation) controllers (the standard option for most smaller, home systems), MPPT (maximum power point tracking) controllers (these being considered the most efficient, but are rather designed for more heavy-duty, industrial jobs), LCD-display controllers (extra user-friendly, showing you all the details), dual battery controllers (self-explanatory - they can control and monitor two independent batteries), waterproof controllers (especially designed for conditions with high levels of moisture).

How to select right Solar Charge Controller

Solar Charge Controller Connection Scheme

Now to go on to what you would need to take interest in when selecting the right controller for your system, the first detail would be the size. You can either use the manufacturer’s website and search for sizing tables or other such tools yourself or phone their customer service for the information you need. After that, some focus is needed in regard to the maximum voltage the controller can handle and how it can tackle different temperatures it might be exposed to. Fortunately, once more, the manufacturer has the duty of offering you the particulars on this matter; thus, make sure you inquire about these as well.

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