It can be considered that various energy storage methods have a maximum discharge depth that can be achieved or allowed. For example, the energy that can be released by pumping water must be less than the power consumed by the original pumping water. Then its ratio of power and energy storage is the concept of discharge depth. This is the depth of discharge. For batteries, if the power is released too much, it will be damaged in the service life of the battery. Therefore, there is a maximum allowed to generate the depth of power generation.

Generally speaking, the maximum allowable discharge depth of the shallow cyclic battery is 50%, while the maximum allowable discharge depth of the deep cycle battery is 80%. If in the cold area, it is necessary to consider the necessary correction of this low -temperature anti -freezing problem. During design, you can appropriately reduce the capacity of this value to extend the capacity of the battery to extend the service life of the battery. For example, if you use a deep cycle battery, when designing, the maximum percentage of the battery capacity of the use can be set at 60%instead of 80%. There will be no big impact on costs. This can be handled flexibly according to the actual situation.