With many Nissan Leaf cell packs hitting the market, we have had quite few customers using the REC-2Q BMS in combination with Victron, Sunny and many other inverters for backup, off grid, RV and marine applications.
The 6.6V packs make it look a bit intimidating so we have created a couple of sample wiring diagrams for a 1P and 2P configuration that should help you get up and going.