A System for Characterizing Batteries and their Charging-Discharging Properties

Currently, battery is very indispensable as a power supply of various electronic devices. Therefore, research on batteries has developed rapidly and their charging-discharging properties must be characterized. This paper reports the development of an electronic system used to characterize batteries. The system consists of a programmable power source (PPS), a programmable load (PL), an amperemeter, a voltmeter, and a computer. The PPS and PL are used interchangeably, one for charging and the other for discharging. A battery under test (BUT) is directly connected to the PPS and PL interchangeably. A 1.2 V NiMH battery with a capacity of 750mAh has been characterized their charging-discharging properties. It has been found that the curves of charge and discharge are in accordance with the theories.

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