M3-44-1 44 Ah MicroMaintenance Battery

The model M3-44-1 (P/N 32663-001) is a 19-cell Micro-Maintenance battery, with a nominal voltage of 24V, and a nominal capacity of 44Ah, at a weight of only 80 lbs. (max). The M3-44-1 will provide an Imp (15-second discharge @ maximum power transfer) of 1375 amps at room temperature.  The M3-44-1 provides significant maintenance-cost savings for Cessna  applications. 


  • The M3-2-44-1 is currently PMA’d for the following applications: Cessna 425, 500, 525, 550, S550, 560, 650, 750
  • The M3-2-44-1 is designed as a low-maintenance replacement for our 44Ah ATSP-44 batteries.

Length: 9.94” max
Width: 9.69” max
Height: 10.25” max
Weight: 80 lbs.
Connector: MS3509

Voltage: 24.0 volts (nominal)
Capacity: 44Ah minimum (at C-rate)
Imp : 1375A @ 15 seconds
(Discharge current at maximum power transfer)