charge controllers Archives

September 2014

What is “Maximum Power”?
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What is “Maximum Power”?

Battery, Charge Controller, PV, Solar

What is “Maximum Power”?

By Harsha Kuntur|2018-01-17T18:20:57+05:30September 9th, 2014|

Let's take an energy source like a battery or a PV module. When you draw no current from it, the voltage at it's terminals is called it's open-circuit voltage. When you connect any electrical load to it, current flows through it and it's terminal voltage decreases because some power is wasted by it's internal resistance. [...]

Charge Controllers protect our batteries.

By Harsha Kuntur|2018-01-17T18:20:57+05:30September 8th, 2014|

Our batteries are expensive components of our off-grid solar installations. So it is a good idea to protect them from over-charging and deep discharge. To do this we use charge controllers. Charge controllers sense the voltage on the battery. If it is lower than a given threshold then they disconnect the battery from the load. [...]