- Saft 016392-000 Nicad Aircraft Battery (40176-7) Uses Cell VP400KH. For use on Boeing 737-300, -400, -500, -700, and some 747 series aircraft.
The main batteries serve a critical safety function in case of on-board power failure. The two principal functions of these batteries are:
- Autonomous electrical power for starting engines or APU's on the ground or in flight.
- Emergency electrical power in case of electrical generation system failure in flight.