## General - battery_percentage

### Function Introduction
This DP represents the total cleaning time on the device side. The device needs to summarize and record the historical cleaning time.

### DP Protocol
 **DP Code** | **Required** | **Function Point Name** | **Data Type**  | **Data Transmission Type**   | **Remarks**               
-------------|----------|-----------|-----------|--------------|----------------------
 battery_percentage  | Optional       | Remaining Battery   | Numeric (Value) | Report Only (ro) | --

### Device Interaction Process
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### Notes
The DP for remaining battery is read-only and requires the device to periodically report the remaining battery level.