7-75M3120 75 Ah MicroMaintenance Battery

The model M3 X-33-4 (P/N 33181-004) is a 20-cell Micro-Maintenance battery, with a nominal voltage of 24V, and a nominal capacity of 33 Ah, at a weight of only 60 lbs. (max). The M3 X-33-4 will provide an Imp (15-second discharge @ maximum power transfer) of 1400 amps at room temperature.


The 7-75 M3120 is currently PMA’d for the following applications:  Boeing Aircraft: 717-200 Series and McDonnell Douglas: MD-90-30

The 7-75 M3120 is designed as a low-maintenance replacement for ELDEC BA-36-01 batteries.

Length: 7.85” max
Width: 6.50” max
Height: 10.19” max
Weight: 45 lbs.(44 lbs. typical)
Connector: MS3509

Voltage: 8.4 volts (nominal)
Capacity: 75Ah minimum (at C-rate)
Imp : 1200A @ 15 seconds
(Discharge current at maximum power transfer)