ESC to compensate for battery voltage drop

[steady_eddie]

Is it possible that some ESC's can compensate for battery voltage drop by reducing power when the battery is in a good state?

i.e. with a 8.5T motor and freshly charged lipo's the car has good power and speed. As the batteries deplete the car runs too slow.

If I put a more powerful motor on the car would run at a good speed when the batteries are low but would be too powerful with fresh batteries.

So can any ESC give me consistent power throughout the battery cycle?

Fresh batteries will be 8.4v but near cutoff will be 6v so that's 30% difference in power as the batteries run down which is very noticeable on the track.