Pairing a Deye Hybrid Inverter (5kW to 12kW) with a Felicity Lithium Battery (such as the LPBF or FLA series) creates a robust, high-performance power system. However, because they are different brands, achieving closed-loop BMS communication and configuring the right parameters is critical to maximize performance and battery lifespan. Felicity solar's
Phase 1: Physical Wiring & DIP Switch Configuration To let the Deye inverter and Felicity battery "talk" to each other via CAN-bus or RS485, physical settings on the battery must be configured first.
BMS Version Check: Ensure your Felicity battery's BMS firmware is V305 or above to ensure native compatibility with Deye protocols. Scribd
DIP Switch Settings (Addressing):
If you are running a single battery, it is designated as Master / Battery No. 1. Scribd
Set the DIP switches on the Felicity battery according to its manual for Master status (typically Pin 1 and Pin 5 ON, while others remain OFF, depending on the specific model layout).
Crucial Step: You must restart the battery using its power button after changing DIP switches so the BMS registers the address change. Scribd
Communication Cable Connection:
Use a standard inverter-to-battery comms cable (or pin-match accordingly: typically CAN-H to Pin 4, CAN-L to Pin 5, or RS485-A/B mapping if using RS485). Felicity solar's
Plug the cable into the CAN (or RS485) port on the Deye inverter and the BMS / Link 0 port on the Felicity battery. Facebook
Phase 2: Deye Inverter Settings (BMS Setup) Once wired, turn on the system and access the touchscreen display on your Deye 5kW–12kW inverter:
Go to Settings → Battery Set.
Select Lithium Mode (Do not use Lead-Acid or User-Defined if closed-loop communication is active).
Set the Battery Brand protocol:
Select the appropriate matching code/brand protocol (often aligning with standard Pylontech/Felicity protocol maps depending on firmware, or protocol CAN / Li-0).
Verify the battery capacity:
Input the correct total Amp-hours (Ah). For example, if you have a single 48V 200Ah Felicity battery, set capacity to 200Ah. For dual parallel batteries, set to 400Ah.
Check Communication Validation:
Navigate to the inverter's main monitoring screen. If successful, the real-time State of Charge (SOC%), battery voltage, current, and temperature will populate on the screen.
Phase 3: Charging & Discharging Performance Parameters If communication is established, the BMS will automatically manage thresholds. However, you should double-check that the manual fallback/protection parameters align with Felicity specifications:
Parameter Recommended Setting (48V / 51.2V Systems) Max Charging Current Set according to your battery size (e.g., 50A–100A per battery module based on manufacturer specs) Max Discharging Current Match to the BMS continuous discharge rating (e.g., 100A for a standard 5.1kWh/100Ah unit) Absorption / Bulk Voltage 53.2V – 54.0V (or up to 56.0V if running open-loop/voltage-defined mode) Float Voltage 53.2V Shutdown / Low SOC 20% (or 44V–48V in voltage mode) Low Cut-off SOC 10% to protect cell health from deep discharge Phase 4: Troubleshooting Common Issues Inverter shows "BMS Error" or Battery % is missing:
Check if the communication cable is plugged into the correct port (Ensure it's not plugged into an RS485 port meant for parallel batteries).
Confirm that the Felicity battery was fully restarted after setting the DIP switches. Scribd
Fallback Option (Open-Loop / Voltage Mode):
If firmware mismatches prevent communication, switch the Deye battery setting to Users/Lead-Acid and manually input the absorption, float, and cut-off voltages listed above. Note: In open-loop mode, the inverter relies on voltage curves rather than live data packets, meaning your SOC% indicator on the screen may fluctuate less accurately.
