GAQQEE | DC7-55V Round LED Voltage Battery Capacity Indicator with Power-off Memory Flash Alarm Digital Power Board Battery Monitor

Features: 1. Low Voltage Alarm: A red lightning symbol flashes when battery power is critically low. 2. Customizable Voltage Settings: Configure the full charge voltage (100%) and fully discharged voltage (0%). 3. Display Backlight Timer: Built-in adjustable backlight timer with options for constant-on or timed operation. 4. Power-Off Memory Function: Automatically saves current charge data even during unexpected power interruptions. 5. Wide Battery Compatibility: Supports ternary lithium, iron phosphate, lead-acid batteries, and more—suitable for electric vehicles, energy storage systems, and other applications.Specifications:Voltage measurement range: DC 7-55V (Red display: DC 7-40V)Operating current: ≤20mADisplay type: LED screenDisplay colors: Red, green, blue, white (optional)Default voltage for ternary lithium battery L03S (L03) upon initial power-upTernary lithium battery L measurement: 3S~12SLithium iron phosphate battery F measurement: 3S~14SLead-acid battery P measurement: 12V/24V/36V/48VProduct dimensions: 30303mmPackage Included:Battery indicator*1