SolarPairing / Works, closed loop
SAJ Sunfree series × Pylontech US2000 / US2000V2 / US3000 / US2000C / US3000C / US5000 / US5000-B / UP5000 / UF5000 / Phantom-S / Force-L1/L2 / Pelio-L / Fidus-L
Pylontech v2.40 lists the SAJ Sunfree series with its named 48 V ESS families over RS485 at 9600 baud. The row documents on-grid and off-grid use, activation and forced charging, with firmware V2.031/V1.037. This serial pairing is distinct from the CAN-based SAJ H1 entry. Confirm the exact Sunfree model, both applicable firmware values, baud-rate setting and battery revision before commissioning.
Status
Works, closed loop
Protocol
RS485
Last verified
2026-08-30
01 / About this pairing
Pylontech v2.40 lists the SAJ Sunfree series with its named 48 V ESS families over RS485 at 9600 baud. The row documents on-grid and off-grid use, activation and forced charging, with firmware V2.031/V1.037. This serial pairing is distinct from the CAN-based SAJ H1 entry. Confirm the exact Sunfree model, both applicable firmware values, baud-rate setting and battery revision before commissioning.
02 / Source
https://pylontech.com.br/wp-content/uploads/2025/10/Compatibility-List-of-Pylontech-and-Inverters-Ver.2.40.pdf