SolarPairing / Works, closed loop
Hoymiles HAS-3.8LV-USG1 / 6.0LV-USG1 / 7.6LV-USG1 / 9.6LV-USG1 / 11.5LV-USG1 × Fortress Power eFlex MAX 5.4 / eVault MAX 18.5
Fortress Power's compatibility guide lists the named Hoymiles HAS low-voltage models with eFlex MAX 5.4 and eVault MAX 18.5 batteries. Fortress marks these battery families as closed-loop capable and publishes minimum-bank sizing separately. This does not cover a different Hoymiles line by implication. Confirm the precise HAS model, battery count, Fortress communication setup, firmware and current commissioning guide before installation.
Status
Works, closed loop
Last verified
2026-10-04
01 / About this pairing
Fortress Power's compatibility guide lists the named Hoymiles HAS low-voltage models with eFlex MAX 5.4 and eVault MAX 18.5 batteries. Fortress marks these battery families as closed-loop capable and publishes minimum-bank sizing separately. This does not cover a different Hoymiles line by implication. Confirm the precise HAS model, battery count, Fortress communication setup, firmware and current commissioning guide before installation.
02 / Source
https://www.fortresspower.com/dealers/inverter-compatibility/