2-8S Lipo Cell Checker with Low Voltage Alarm Buzzer onboard manual by usongs Specifications. . Input: 2~8S . Battery type: Lipo/LiFe/Li-ion . Cell Voltage Display Range: 0.5v~4.5v . Total Voltage Display Range: 3.7~36v . Alarm set values: Off or 2.7~3.8v . Size: 41x30x13mm . Weight: 13g(with case) .