BYD Res 2.5-10.0, Installation Guidance, Page: 40 / 50

Battery
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Box Residential installation guidance
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Status(display interval 2S) Definition
LED(BMU) Blinks 1 time Inverter not connected
Blinks 2 time Battery not connected
Blinks 3 time Battery disconnect
Blinks 4 time Battery failure
Remark:
Slow blink: Indicator light is on and off every 1s (0.5Hz).
Fast blink: indicator light is on and off every 0.25s (2HZ)
SOC status and indicate
Item Status Indicate
1 Four lights are all normally on Capacity is 100%-75% (including)
2 The last three lights are normally on Capacity is 74%-50% (including)
3 The last two lights are normally on Capacity is 49%-25% (including)
4 The last one light is normally on Capacity is 24%-1% (including)
⑷
System running.