控制器的性能不好时，对蓄电池的使用寿命影响很大，并最终影响系统的可靠性。
The controller is bad, to the service life of the battery, which influences the influence of the reliability of the system.
当蓄电池所储存的电能放完时，太阳能控制器要控制蓄电池不被过放电，保护蓄电池。
When the battery the stored power put up, the solar controller to control the battery will not be a discharge, protect the accumulator.
太阳能发电系统由太阳能电池组、太阳能控制器、蓄电池(组)组成。
Solar power system consists of solar batteries, solar controller, battery (group) composition.
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