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You must understand several voltages of solar charge controllers

You must understand several voltages of solar charge controllers

(Summary description)The high voltage protection voltage is to prevent the battery from overcharging, generally at 15.5V. Some controllers do not have this function, or this function fails, and the result is that the battery bulges and even fails.

You must understand several voltages of solar charge controllers

(Summary description)The high voltage protection voltage is to prevent the battery from overcharging, generally at 15.5V. Some controllers do not have this function, or this function fails, and the result is that the battery bulges and even fails.

Information

One: The high voltage protection voltage is to prevent the battery from overcharging, generally at 15.5V. Some controllers do not have this function, or this function fails, and the result is that the battery bulges and even fails.

solar panel charge controller

Two: The low voltage protection voltage is the voltage set to prevent the battery from being over-discharged. Generally it is at 11V. Similarly, if it does not have this function, or the precision of the components is not enough, the battery will be over-discharged. Usually the voltage of the battery is lower than 5V, it will be difficult to recharge it, and the battery will be scrapped.
 Three: Recovery voltage, which means that after the controller is under low voltage protection, it needs to recover to a certain voltage value before it can work normally. Usually the voltage is 12.5V. If this low voltage value is not reached, the controller cannot automatically resume work.
In order to make the battery last longer, some people usually ask us, the low-voltage protection voltage of the battery is 11V, can you lower it for me, such as 9V, so that our battery can last longer. The answer we gave was no. Because the 11V voltage point is the limit where the battery has almost used about 70% of its power. If you lower the voltage, it will cause the battery to run in a power-deficient state for a long time, which will affect the life of the battery over time.
 

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