Test the working state of lithium battery. Protect the battery from overcharging or overdischarging. Just plug into the balance plug and the LED will cycle through the individual cell voltages as well as list the total voltage. When the voltage is below the set value, it will buzzer with red LED light, pre-set value 3.3V. Push the key which can change the voltage setting and save. Easy to use - works with any 1-8S Lipo/Li-Ion/LiMn/Li-Fe RC drone battery. Protect the battery from overcharging and overdischarging Just plug into the balance plug and the LED will cycle through the individual cell voltages as well as list the total voltage Super loud alarm sound makes it easier to find your drone Package：5Packs 2in1 1-8s Lipo Li-ion Battery Voltage Tester Check

A very useful RC Tool for your batteries,Test the working state of lithium battery. Protect your battery fromovercharging or overdischarging.

Specification:

Weight: 11g

Dimension: 40 * 25 * 11mm

Display: LED

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: 3.6-32V

Low voltage alarm mode for:2-8S

Alarm set value range: OFF-2.7-3.8V

Package Content: 5 x Lipo Battery LowVoltage Tester

Note:

When the voltage lower than the set value,it will buzzer with red LED light. Pre-set value is 3.3V. Push key which canchange the voltage setting and save.