Originally Posted by itgoes211
Thanks. I know it comes with group 27 batteries but want to know the size of the compartment for other options.
You can shoehorn a pair of 31ís in but LiFePoís will not fit maybe with the exception of Battleborns.
There are posts here where folks have built a vertical extension for the step to accommodate taller batts and posts on the private FB group where LiFePoís were located in the adjacent compartment using a buss bar. That leaves the step available for a tool box or inverter etc...