- Settings timeout and automatic return: If no button is pressed within 5 seconds while in the settings state, the device automatically returns to the normal battery status display. - Default configuration on first power-up: The default setting uses a ternary lithium battery with 3 voltage lines. - Save and return after adjustment: After making changes, press and hold Button 2 for 2 seconds to save and return to the battery status display (or wait 5 seconds for automatic return). - Power-saving behavior: In normal display mode, if no button press occurs for 10 seconds, the display automatically turns off and the device enters low power mode. You can also briefly press the button to turn off the display and engage low power consumption; when the device is off, a brief press turns it on and shows power status. - Use scenarios: - Regular battery monitoring in portable devices: quickly view battery status and apply changes without leaving the device in high power mode. - System setup and calibration: configure the default ternary Li battery with 3 voltage lines, then save and return to status display with a single action. - Power-conscious environments: enable automatic display-off to conserve energy, then wake up instantly with a brief button press for power status checks.