4-Pack Blue LED Battery Voltage Tester Module, 7-55V DC Battery Capacity Monitor for Lithium/LiFePO4/Lead-Acid, Customizable Voltage, Backlight Timer

Upgrade your battery monitoring with this blue LED voltage tester module. It covers 7-55V DC and supports multiple battery types, including Lithium-ion, LiFePO4, and Lead-Acid, with customizable settings. It features a power-off memory function to retain your settings. The energy-saving backlight and compact size (46x15x3mm) make it perfect for vehicles, solar projects, and more. Enjoy clear blue display and reliable performance for all your power needs.

• Accurate Measurement & Flexible Battery Compatibility: Designed for 7-55V DC systems, this tester supports Lithium-ion (3S-12S), LiFePO4 (3S-14S), and Lead-Acid (12V/24V/36V/48V) batteries. Custom voltage settings enable tailored capacity display for optimal battery management.
• Convenient Set-and-Forget with Memory Function: Features a power-off memory function that automatically saves your settings. Once configured, the module retains all preferences (including battery type and backlight time) even after a power cycle, eliminating the need for repeated setup.
• Low Voltage Alert & Power-Efficient Backlight: Includes a low voltage alarm to warn users of potential battery issues. The blue LED backlight can be programmed to auto-off after a set time, minimizing energy use without sacrificing readability.
• User-Friendly Installation & Vibrant Blue Display: The small form factor (46x15x3mm) simplifies integration into various setups. The vibrant blue LED screen provides a clear readout of voltage and battery status, enhancing visibility in diverse environments.
• Ideal for Multiple Applications: Suitable for electric vehicles, solar power systems, automotive diagnostics, and DIY electronics. A must-have tool for engineers, automotive technicians, and DIYers who demand precise battery tracking.