ITEM NAME:1-8S Lipo LiMn Battery Tester Low Voltage Buzzer Alarm K4U9 1-8S Lipo LiMn Battery Tester Low Voltage Buzzer Alarm K4U9 Brand new and high quality Test the working state of lithium battery Protect the battery from overcharging or overdischarging Suitable for 1-8s Lipo/Li-ion/LiMn/Li-Fe battery Voltage detection precision: +/- 0.01V Unit voltage display range: 0.5-4.5V Total voltage display range: 0.5-36V 1S test mode voltage range: 3.7-30V Low voltage alarm mode for 2-8S Alarm set value range: OFF- 2.7-3.8V Note: 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 Included:1 x Battery tester Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.