SolarPairing / Works, closed loop
Sol-Ark 5K / 8K / 12K / 15K / 18K low-voltage hybrid inverters × Fortress Power eFlex Max / eVault Max
Sol-Ark's 2026 guide lists Fortress Power eFlex Max and eVault Max as proven low-voltage battery partners for the covered 5K through 18K hybrid inverters. The guide provides dedicated BMS communication procedures through the Sol-Ark battery interface; eVault Max requires the specified custom RJ45 cable. Check the precise Fortress model, firmware, inverter enclosure and applicable manufacturer documentation, because the guide limits support to the documented battery versions and configuration.
Status
Works, closed loop
Protocol
CAN
Last verified
2026-08-29
01 / About this pairing
Sol-Ark's 2026 guide lists Fortress Power eFlex Max and eVault Max as proven low-voltage battery partners for the covered 5K through 18K hybrid inverters. The guide provides dedicated BMS communication procedures through the Sol-Ark battery interface; eVault Max requires the specified custom RJ45 cable. Check the precise Fortress model, firmware, inverter enclosure and applicable manufacturer documentation, because the guide limits support to the documented battery versions and configuration.
02 / Source
https://sol-ark.com/wp-content/uploads/2024/06/LV_Batt_Integration_Rev7_8May2026.pdf