Battery's

[Patg]

Hi
I was thinking of removing the battery from the engine bay
Then mount 2 6 volt battery's behind the seat.
Has anyone done this? I would put each battery in a battery box and
Secure it to the floor.
I have seen where people mout the battery under the
Bed or in the bed but I am not crazzy about eather location for different reasons.
If it is behind the seat it is out of site and protected form the engine heat.
What do you think?
Any down side?