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Battery Life

1) Cycle Life
Cycle life (number of cycles) of the battery is dependent on the depth of discharge in each cycle. The deeper the discharge is, the shorter the cycle life (smaller number of cycles), given the same discharge current. The cycle life (number of cycles) of the battery is also related to such factors as the battery type, charge method, ambient temperature, andrest period between charge and discharge. Typical cycle-life characteristics of the battery by different charge/discharge conditions are shown by the below figures.

Notes: This data is typical and tested at a well-equipped laboratory.
           Cycle times are different for each battery model.
           Cycle times are also different from this data when using batteries under real conditions.

Cycle Life vs. Depth of Discharge
Constant Voltage Cycle Life Characteristics (Model: TR2.3-12)
Rapid-Charge Cycle Life Characteristics (Model: TR2.3-12)
2) Trickle (Float) life
Trickle life of the battery is largely dependent on the temperature condition of the equipment in which the battery is used, and also related to the battery type, charge voltage and discharge current.

The respective figures below show the influence of temperature on trickle life of the battery, an example of trickle (float) life characteristics of the battery, and the test result of the battery life in an emergency lamp.

Influence of Temperature on Trickle Life
Trickle Life Characteristics at 122F (50C)

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