5Pcs 1-8S Indicator RC Li-ion Lipo Battery Tester Low Voltage Buzzer Alarm Features: & . Function of checking your lipo cells voltage Voltage display function and low voltage alarm funtion. Use for 1-8s Lipo/Li-ion/LiMn/Li-Fe. Protect the battery from overcharging or overdischarging Test the working state of lithium battery Automatic protects against reverse connection Specifications: Voltage detection pricision: 0.01V. Unit voltage display range: 0.5V-4.5V. Total voltage display range: 0.5V-36V. 1S test mode voltage range: 3.7v-30v. Low voltage alarm mode for 2-8S. Alarm set value range: OFF-2.7V-3.8V. When the voltage is below the set value,it will buzzer with red LED light,pre-set value 3.3V.Push key which can change the voltage settings and save. Package size: 9 * 5 * 4cm / 3.6 * 2 * 1.6in Package weight: 52g / 1.8oz Package list: 5 * 1-8S Voltage Buzzer Alarm