The M1A2 SEP and SEPV2 should both gain it’s notable Under Armor Auxiliary Power Unit (UAAPU), which, “consists of a turbine engine, a generator, and a hydraulic pump.”, “The generator is capable of producing 6 Kilowatts of electrical power at 214 Amps, 28 vdc, and the hydraulic pump is capable of delivering 10 Kilowatts of hydraulic power. The UAAPU can meet the electrical and hydraulic power to operate all electronic and hydraulic components used during mounted surveilance operations and charge the tank’s main batteries.”. In short, it does not need to have the main turbine engine one to meet power needs, and can maintain in a state of alertness and full energy even with the engine turned off.

The UUAPU is located as where the images above state, and are under the armor, hence the name.
I think this would be a great idea to add, together with the LWS coming in the next upgrade (to the sepv2)
M1A2 Abrams , paragraph 9 and 10
https://www.defenseindustrydaily.com/digital-abrams-the-m1a2-sep-program-updated-02834/ Multiple paragraphs
https://odin.tradoc.army.mil/WEG/Asset/739fc6eb75d491d6704b7f265b2704b9
M1A2 SEP , under “accessories”
