A little math may help. Basically it would not be recommended to use batteries with 4.8A Max with scarlet.
If the battery has a range like most v-mounts, it will have a voltage of ~11-16V as it discharges depending on the load. Toward the end of the battery (worst case), that means 11v*4.8A=52.8W which is less than scarlets quoted spec of 60w. Its possible it'd work but I would definitely not recommended it since it could be bad for the camera and since battery capacity drops a lot when pushing most cells to their max.