A battery is supposed to do that? Plus provide all of the electrical power demands, (NBC systems and communications/computing suites)?
45 MPH? It’s a gas turbine, all I will say is I have rode in a Marine M1A2 when they had them and 45 MPH is like a Dick and Jane Book.
I’m not saying this is a viable solution, but when industry wants the TORQUE required to move large loads, they use ELECTRIC MOTORS. Infinitely torque is a real thing.
That is the important data point. Also important is the thermal difference that a typical thermal sight can detect. A human being is easy to see in a thermal scope, as is a 100 pound wild pig.
The amount of energy required just to operate the on board communications equipment releases enough heat for the tank to be detectable with a thermal sight system. The only scheme likely to hide the tank is some kind of active surface cooling technology which relies on hot surfaces where the sights can't see them, like under the tank.
Regardless of whether the energy input is from kerosene or batteries it ultimately all turns to heat.