Key benefits Fast and precise configuration of battery type and voltage with simple 2 second actions Clear visual feedback through the Mode Light and Number/Voltage Light to guide setup Quick save and automatic to the main Power Status display for efficient workflow Flexible control for battery string numbers and voltages to match different battery configurations Suitable for field work, maintenance, and DIY projects that require reliable battery parameter setup How to use Step 1: After confirming the battery type, hold the key for 2 seconds to enter the Number 2 / Voltage Setting mode. The Mode Light remains on, and the Number/Voltage Light flashes. Step 2: Use the button to set the battery string number or the voltage. Refer to the above table option for details. Step 3: Hold the key for 2 seconds to enter the setting state. The Mode Light (Battery 1 Type) flashes and the Number Light stays on. Briefly press the key to select the battery type. Step 4: After setting, hold the key for 2 seconds to save the data and to the display of 4 Power Status (or wait 5 seconds to automatically ). Practical use scenarios DIY power supply or portable energy storage projects where different battery packs require specific string counts and voltages. Field service or workshop environments where technicians configure multiple devices with varying battery types to speed up setup. Prototyping or testing of devices that use interchangeable battery configurations, enabling quick switching between settings without reprogramming.