Hi John,I don't see individual battery compartments as the FAA guidelines specify. If you throw them into an undivided compartment you'll need individual battery bags. The think tank helipak provides individual battery compartments for three or four batteries. Plus space for many other items. It's a little bigger than the POLAR PRO, dual handle, rain skirt and a padded waist belt. $200
It is a modular system, so you can actually move the dividers around to create individual battery compartments!
I have 4 P4 batteries sectioned off in my bag, I personally like a smaller, compact bag, which is why we designed our DroneTrekker to be a bit smaller, and also $90 less expensive

Thanks for the question John!
-Jeff