Features:
It can be used for 2-6S LiPo batteries.
RC LiPo battery monitor with a 3 digit 7 segment LED display.
Small size and light weight, really portable.
Make it easier for you to check with your battery before flight to avoid overdischarge.
Auto shift the voltage data one unit by one unit.

Note:
This device is for quick reference before flight, not for accurate measure for the battery.
Extra balance charger plugs are needful (which are not included in this package).

pecifications:
Color: Red + Black
Voltage detection precision: +/- 0.01V
Unit voltage display range: 0.5-4.5V
Total voltage display range: 0.5-27V
Pins distance: 2.5mm
Item size: 4.9 * 2 * 1.5cm
Item weight: 5g
Package size: 10 * 4.8 * 1.6cm
Package weight: 10g

Package including:
1 * RC Battery Voltage Check Meter