CVC8S: Cell Voltage Checker for Li-ION, Li-PO, Li-Fe, Li-Mn batteries (1 thru 8 cells in series). Plugs into balance connector. Displays total pack Voltage and individual cell voltages. Has built-in adjustable low-V beep alarm. Features -When the cell voltage is below the set value, the buzzer will sound along with red LED light, default value 3.3V -Alarm set value range: OFF-2.7V-3.8V -Programmable voltage threshold -Protects aircraft from unwanted landings and batteries from over-discharging -Ideal for all electric vehicles, boats, and aircraft using LiPo batteries -Protects drivers from over-discharging LiPo's when using an ESC that doesn't have Low Voltage Cutoff -Monitors a batteries low voltage down to the cell level -Unit checks and displays the cell count, voltage of the overall pack and then each cell individually up to 8S -Compatible with JST-XH type balance connectors -Large, digital LED display -High pitched low voltage warning buzzer -Compatible with 1-8s Lipo/Li-ion/LiMn/Li-Fe -Voltage detection precision to 0.01V -Cell voltage display range: 0.5V-4.5V -Pack voltage display range: 0.5V-36V -Low voltage alarm mode for 2-8S