Deye SUN-8K-SG04LP1 + JK (Jikong) JK-BMS (DIY)

Closed-loop compatibility, protocol setting and cabling. Best status: user reported.

Field-sourced data. Verify against the current official manual and firmware before commissioning — a wrong setting can damage equipment.

RS485 User-reported confidence: low

Protocol: Enershare
Inverter setting: Lithium protocol 9 (RS485 Enershare)

Reported for rebadged PACE/Enershare packs.

Firmware caveats

⚠ Known-broken: inverter fw 0.09 + BMS JK 11.XW — CVL (Charge Voltage Limit) ignored. JK sends big-endian, Deye expects little-endian. No firmware fix — different hardware required.

Sources

Deye RS485 protocol 9 Enershare (forum, reliability: low)
JK/Deye firmware endianness (installer, reliability: medium)

Get the right parts

Comm cable / adapter JK-BMS (DIY)SUN-8K-SG04LP1

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