hello martin,
I have attached a picture of those 24ah batteries that I have just put in a tiger 1, I had to lay them down as like you said they are quite high, I didn't catch which tank you were putting them in but on the tiger 1 placing them like I did just watch the turret turn motor doesn't catch the front battery, I just moved it to one side, also look out for the gun elevation motor, because it hangs down it can strike the batteries if they are not laid down or further enough back to clear the motor.
hope this helps you.