Low Voltage Alarm Function Equipped with a low voltage alarm, it alerts users when battery levels drop below a set threshold, ensuring safety and efficiency. Wide Voltage Range Compatibility Designed to work with a wide range of batteries from 0.5V-4.5V to 0.5V-36V, making it versatile for various devices. User-Friendly Settings The push key allows you to easily change and save voltage settings, bringing convenience to frequent users. High Precision Voltage Detection With an accuracy of 0.01V, this voltage tester ensures accurate readings for your Lipo/Li-ion batteries. High Quality Material Constructed from high quality materials, this voltage tester ensures durability and long-lasting performance. Compact and Portable Design Measuring 3.9cm x 2.4cm x 0.9cm, this voltage tester is compact and lightweight, perfect for use on the go.