Key benefits Quick and reliable configuration of battery type and voltage using a single button and clear indicator lights. Safe setup workflow that requires confirmation before changes are applied, reducing configuration errors. Immediate feedback through mode, number, and voltage lights, with automatic to the power status display after saving or after a short delay. How it works Step 1: Hold the key for 2 seconds to enter the setting state. The Mode Light (Battery 1 Type) flashes and the Number Light remains on. Use a brief press to select the battery type. Step 2: After confirming the battery type, hold the key for 2 seconds to enter Number 2 / Voltage Setting. The Mode Light stays on, and the Number/Voltage Light flashes. Step 3: After setting, hold the key for 2 seconds to save the data and to the 4 Power Status display. Or wait 5 seconds to automatically . Step 4: Use the button to set either the Battery String Number or the Voltage. Please refer to the above table option settings for details. Compatibility and usage notes Designed for devices that use a Battery Type selection and voltage settings, as indicated by the Mode Light and the Number/Voltage indicators. The button controls both Battery String Number and Voltage settings, with the exact options detailed in the referenced settings table. The workflow provides a clear, indicatordriven path to configure and save settings, then to the power status view. 23 practical use scenarios Scenario 1: Field technician configuring a modular battery pack Use the key to enter the setting state, select the appropriate Battery Type, then set the required Battery String Number and Voltage. Save to apply and to the Power Status display for verification. Scenario 2: Workshop setup for testing different battery configurations Quickly switch between Battery Types and adjust voltage settings to validate performance. The 4 Power Status display provides a consistent reference after each save. Scenario 3: Onsite maintenance for equipment with varying power requirements Use the 2second holds to enter and adjust settings on the fly, ensuring the device reads the correct type and voltage, with automatic to status view to confirm changes.