Brand new and high qualityTest the working state of lithium batteryProtect the battery from overcharging or overdischargingSuitable for 1-8s Lipo/Li-ion/LiMn/Li-Fe batteryVoltage detection precision: +/- 0.01VUnit voltage display range: 0.5-4.5V Total voltage display range: 0.5-36V1S test mode voltage range: 3.7-30VLow voltage alarm mode for 2-8S Alarm set value range: OFF- 2.7-3.8VNote: 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 testerNote: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.