20NKBN-28 Nickel-Cadmium Aircraft Battery

20NKBN-28 Nickel-Cadmium Aircraft Battery

The 20NKBN-28 nickel-cadmium aircraft battery is a 28V onboard power source designed for Mi-8 / Mi-17 family helicopters and other aircraft operating 27V DC electrical systems. The battery consists of 20 series-connected nickel-cadmium cells and is engineered for high discharge current performance required for engine start and emergency power supply. Application: – Main engine and APU starting support – Backup power for DC buses – Ground operation without external power unit – Stabilized supply for onboard avionics during transient loads Technical configuration: – Nominal voltage: 28V – Cell chemistry: sealed nickel-cadmium – Designed for aviation vibration and thermal environments – Compatible with standard helicopter battery compartments and charging systems Operational advantages: – High cranking capability – Stable voltage under load – Long cycle life under aviation duty profile – Performance in low-temperature environments – Maintainable cell structure with serviceable design The 20NKBN-28 Ni-Cd battery is widely used across Mi-8MTV, Mi-17, Mi-171 and related variants where 27V DC power architecture is installed. Suitable for civil, governmental and military operators. Units available for supply including new production and serviceable condition options. Technical documentation, conformity confirmation and logistics support available upon request.