50% higher energy density of Ni-Cd batteries and the relatively low terminal voltage of the batteries are the factors considered to drive the Ni-Cd batteries segment growth in the train battery market. Moreover, the better performance characteristics of the Ni-Cd battery are the key supporting factor making it the most popular brand among the locomotive operators. The main operation of these batteries is to provide auxiliary power to diesel locomotives to kick start the engine. Ni-Cd batteries are made from the sintering plate method which provides incremental dimensional stability to the design of the battery. According to Exide India, the Ni-Cd battery was accounted for approximately 440 million USD in the year 2021 owing to the reliability of the batteries and the increasing popularity of the product in the APAC market.
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