M3-44-8 44 Ah MicroMaintenance Battery

The model M3-44-8 (P/N 32845-001) is a 19-cell Micro-Maintenance battery, with a nominal voltage of 24V, and a nominal capacity of 44Ah, at a weight of only 81 lbs. (max). The M3-44-8 will provide an Imp (15-second discharge @ maximum power transfer) of 1335 amps at room temperature.  Current EMB-145 operators are at extended battery maintenance intervals of 2,000 Flight Hours. 


  • The M3-2-44-8 is currently on the Embraer 145 Fleet AIPC (Aircraft Illustrated Parts Catalogue) which includes EMB-135, EMB-140 and EMB-145.
  • The M3-2-44-8 is designed as a low-maintenance replacement for our 44Ah BTSP-4445L batteries.

Length: 15.66” max
Width: 6.5” max
Height: 10.125” max
Weight: 81 lbs. (80 lbs. typical)
Connector: MS3509

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