Since our old design (see it here) was kinda janky, we decided to improve it
what we improved:
added a another charger so now we fit 6.
the case originally was covered in foam so we removed that
we rewired the cables and made it cleaner
Version 1 required some disassembly to close the case, but the new one just closes without having to take apart anything.
FYI - 7.2 NiMH 3000 are ok to charge on FAST mode with SMART Charger v2 - check the online documentation VEX Batteries product page
Yes it is confusing with different battery packaging, composition, and chargers. It is a case to know what your equipment is good for.