MIL-PRF-8565K

Abstract

This specification covers the general requirements for rechargeable aircraft storage batteries. The batteries are nominal 24-volt batteries that are generally used for medium current engine starting/utility applications, have non-removable covers, and designed for maintenance-free operation (see <a>6.15.10</a>). <b><u>Intended Use:</u></b> The storage batteries covered by this specification are used in fixed-wing and rotary-wing military aircraft. The batteries are used for starting engines or auxiliary power units. They also provide electricity to support aircraft emergency loads, aeronautical and ground systems, and associated equipment. Commercial batteries have a separate charger. Most of the batteries under this specification, however, are designed to be charged directly from the electrical bus without the use of a separate charger. The batteries are also exposed for prolonged periods to extreme seagoing environments not encountered by civilian aircraft. <br>