The Effect of Ambient Temperature on Self-Discharged Rate of Deep Cycle Lead-Acid Solar Battery
The effect of ambient temperature on self-discharged rate of deep cycle Lead-Acid solar battery was studied. The study was carried out in the university of Port Harcourt environment (Latitude 4.8156°N and Longitude 7.0498East), Rivers State, Nigeria (tropical climate region). 250W solar panel was used to charge 100amp-hr, 12V AGM VRLA deep cycle Lead-acid battery through a 12/24V CM 30D charge controller. The self-discharge process was achieved and readings were gotten using a -22°C to 300°C range digital thermometer to measure ambient and cell temperatures. F200mA/250Q5 DTA92050A/9V digital multimeter measured the terminal voltage. The results reveal that change in ambient temperature is directly proportional to the change in self-discharged voltage. As ambient temperature increases, self-discharging voltage increases. Thus, ambient temperature induces the rate of self-discharge of deep cycled Lead-Acid solar battery.
Voltage, Temperature, Lead-Acid Battery, Charge Controller, Self-discharge
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