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More detailed information can be found in the sources listed at the end of this article.įor an increased amount of power requirement and optimal management of onboard electrical power, the concept of MEA poses increased challenges for the aircraft electrical system. The information contained in this article will provide general guidance for this purpose.

With the various battery technologies available today, considerable expertise is required to select the best type and size of battery for a given aircraft application. This article will only deal with those types found in use today: lead–acid, nickel–cadmium, and lithium-ion aircraft batteries.ĭetermining the most suitable battery type and size for a given aircraft type requires detailed knowledge of the application requirements (load profile, duty cycle, environmental extremes, and physical constraints) and the characteristics of available batteries (performance capabilities, charging requirements, maintenance requirements, environmental ruggedness, shelf life, and service life). The only other types that have seen limited use are silver–zinc batteries and, most recently, lithium-ion batteries. Traditionally, two types of batteries have been widely used as aircraft batteries: lead–acid batteries and nickel–cadmium batteries. Other important characteristics include power and energy density, environmental durability, operating temperature range, ease of maintenance, rapid recharge capability, shelf life, cycle life, and tolerance to abuse. Many of these functions are critical to the safe operation of the aircraft, so the reliability of an aircraft battery is of utmost importance. Aircraft batteries are used to start engines and auxiliary power units (APUs), provide emergency backup power for essential avionics equipment and lighting systems, assure no-break power for navigation units and fly-by-wire computers, and to provide ground power capability for maintenance and preflight checkouts.

Vutetakis, in Encyclopedia of Electrochemical Power Sources, 2009 Introductionīatteries are an essential component of virtually all aircraft electrical systems.