Is the SolaX X1-FIT W X1-FIT-7.5-W compatible with the SolaX Yes — BMS Parallel Box II G2?

Yes — listed by the manufacturer.

Offered as a parallel-box option alongside this inverter's battery ecosystem.

Manufacturer's compatibility listListed together in the manufacturer's published pairing data. A cited document reference is being added as datasheets are processed.

Pairing details

Both products

Design a system with this pair