Yes and no, the new decks have a bigger cut out and should readily accept a 12s2p 21700 block but the wire management is a little weirder (needs different slots in the bulk head)
However by sending the battery in the enclosure it is much more secure as the deck holds the battery in place and protects from moisture and abuse
This is my example of what it looks like, most of these are ideal for an XXs2p 21700 or XXs3p 18650
