This paper describes experiment results aiming at analyzing the ambient temperature effect on the lifetime of commercial Nickel-Metal Hydride (Ni-MH) secondary battery. In addition the paper presents the battery characteristics at extremely different ambient temperatures. To investigate this effect, a climatic chamber, has been used to simulate these conditions. Charge and discharge experimental curves of voltage versus time at different temperatures are given for temperatures ranging from -40°C to 80°C. Finally the batteries are retested at room temperature in order to study the temperature effect on the battery ageing.
This paper describes experimental results aiming at analyzing commercial Li-Polymer and Ni-MH batteries performances at extreme temperatures. A climatic test chamber has been used to simulate these conditions, in addition to simple electronic circuits for charging and discharging. Charge and discharge experimental curves of voltage and current versus time at different temperatures are given for temperatures ranging from -40°C to 80°C. Finally, the amount of charge stored to the batteries during the charge cycle at extreme temperature is presented.
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