BAT-05K48M0W-01 ! The main difference between the SolarEdge BAT-05K48M0W-01 and BAT-05K48M0B-02 batteries comes down to their physical design (WIDE panoramic version vs. classic vertical version), usable capacity, and expansion limits. Differences in compatibility and scalability: Maximum stack capacity: The M0B-02 model allows for up to 5 modules to be connected (providing 23 kWh of capacity), while the WIDE M0W-01 variant supports a maximum of 4 modules connected in a single stack per inverter (providing 19.4 kWh). Regions: The WIDE version (M0W-01) was introduced and approved for select European markets (including Poland, Germany, and Austria) as a size-optimized alternative that is easier to install in low-ceiling utility rooms.