Whats the biggest 4s that i can fit on a 04s

[Miata_meistro]

So im thinking of going with zee 6200 mah but im worried they'll be to big for the rig

 

[Arise0185]

Look at the battery dimensions, then compare against the battery tray dimensions listed for whatever truck you're wanting to put the battery into?

 

[Saladshooter]

6200 is not too huge. What RC are you trying to mount it on?

A lot can be accomplished with a little modification and velcro if need be.