IDK if it helps but here is a Taycan Module ESS using custom BMS viewtopic.php?t=6125

Hello

I would like to show You a build from a friend of mine that has used 30 Taycan modules.

The frame is welded and painted white.

The system is made from 2.86kWh 6S2P LG E66A modules with original comunication.

Comunication is made using TPL in 2 strings 15 modules each.

Inverter - Sofar ...