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NiMH batteries

Batteries which can be recharged are known as accumulators. An ensemble of accumulators is called a battery pack. The chemical composition of NiMH consists of a positive electrode (metal absorber/hydrogen) and a negative electrode of nickel hydride on nickel. The electrolyte is an alkaline solution and the accumulator has a spiral-wound structure with a safety vent. NiMH is more fragile than NiCd and is more sensitive to high temperatures.
Fields of use: All portable applications, communication, measurement, electronics, industrial watchmaking, robotics and IT.

Its nominal voltage is 1.2V, reaching up to 1.4V when fully charged and its cut-off is 1V. Its working temperature oscillates between -20°C and 60°C. It can be stored for up to two years between -20°C and 35°C and it can supply up to 500 charge and discharge cycles. It has a high energy density and is cost-effective. Nevertheless, it has a high rate of self-discharge reaching up to 20% per month.



NiMH batteries NX

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