Modules per string: 14 - 15 (the product allows 1 - 16; 13 or fewer sits below the HS19 range, and 16 modules would reach 934 V max charge, above MG's own 900 V system limit. Verify with MG.)
Usable voltage range: 672 - 876 V
Capacity: 165 - 177 kWh per string
derived from datasheet per-module voltages (48 V cutoff, 58.4 V max charge), not yet verified
Full product specifications (unverified, from manufacturer datasheet)