Credit: Tiếu Ngạo Giang Hồ
ONYX 41AH BMS Settings
Navigate these settings for both ONYX 41Ah battery stock settings and tuned settings configuration for optimal performance, range, and power.
- Note that all temperature settings are in Celsius, not Fahrenheit.
Battery BMS App
Use the Overkill Solar BMS app or the Xiaoxiang BMS app to configure the ONYX 41Ah battery. Download links and instructions for the ONYX 41Ah battery BMS apps can be found below.
Battery and Cycle Capacity
-
Total Battery Capacity: Set this field to the full capacity of the battery in milliamp-hours (mAh). For a 41Ah battery, this value would be 41000.
-
Total Cycle Capacity: Set this field to 80% of the total capacity. For a 41Ah battery, this value would be 32800.
BMS Stock Configuration
Capacity Configuration
| Field | Value |
|---|---|
| Number of Cell | 20 |
| Total Battery Capacity | 41000 |
| Total Cycle Capacity | 32800 |
| Cell Full Voltage | 4150 |
| Cell Minimum Voltage | 3000 |
| Cell Self Discharge | 0.2 |
| Cell 100% Cap. Voltage | 4150 |
| Cell 90% Cap. Voltage | 4075 |
| Cell 80% Cap. Voltage | 4000 |
| Cell 70% Cap. Voltage | 3900 |
| Cell 60% Cap. Voltage | 3800 |
| Cell 50% Cap. Voltage | 3700 |
| Cell 40% Cap. Voltage | 3600 |
| Cell 30% Cap. Voltage | 3450 |
| Cell 20% Cap. Voltage | 3300 |
| Cell 10% Cap. Voltage | 3150 |
Balancer Configuration
| Field | Value |
|---|---|
| Start Voltage | 4000 |
| Delta to Balance | 15 |
| Balancer Enabled (On) | Green |
| Bal. Only When Charging (On) | Green |
Function Configuration
The field switch “Display Celsius” can be changed according to you preference.
| Field | Value |
|---|---|
| SW Switch Circuit Enabled (Off) | Gray |
| Display Celsius (Off) | Gray |
Protections
| Field | Trigger | Release | Delay |
|---|---|---|---|
| Cell Over Voltage | 4250 | 4150 | |
| Cell Under Voltage | 2700 | 3000 | |
| Batt Over Volt. | 85000 | 83000 | |
| Batt Under Volt. | 54000 | 60000 | |
| Charge Over Curr. | 70000 | 32 | |
| Discharge Over Curr. (80 Amp BMS) | 90000 | 32 | |
| Discharge Over Curr. (100 Amp BMS) | 110000 | 32 | |
| Charge Over Temp | 65 | 55 | 2 |
| Charge Under Temp | -5 | 0 | 2 |
| Discharge Over Temp | 70 | 60 | 2 |
| Discharge Under Temp | -10 | 0 | 2 |
NTC Enable
NTC refers to the temperature sensors located on the BMS board and around the battery. Some batteries only utilize NTC1, NTC2, and NTC4 sensors.
| Field | Box |
|---|---|
| NTC1 | Checked |
| NTC2 | Checked |
| NTC3 | Checked |
| NTC4 | Checked |
| NTC5 | Not Checked |
| NTC6 | Not Checked |
| NTC7 | Not Checked |
| NTC8 | Not Checked |
Level 2 Protections
| Field | Trigger | Delay |
|---|---|---|
| Level 2 Overcurrent | 720 | 320 |
| Level 2 Overvoltage | 4400 | 8 |
| Level 2 Undervoltage | 2500 | 8 |
Level 3 Protections
| Field | Trigger | Delay | Reset |
|---|---|---|---|
| Level 3 Overcurrent (Short Circuit) | 2000 | 400 | 5 |