Ni-Cd battery for aircraft: battery design and charging options

The Ni-Cd battery has been the battery of choice for aircraft use for several decades. There has been an ever increasing demand for a higher reliability, maintenance-free aircraft battery. The Ni-Cd battery industry responded with several new battery designs supporting low or no maintenance. In this paper, the design, charging, and operating trade-offs between a high pressure sealed cell battery, a low pressure sealed cell battery, a low maintenance vented cell battery, and a standard vented cell battery are discussed.>