LiPo Battery Voltage Tester w/ Low-V Buzzer - 1S to 8S flexible led matrix If you want to make

If you want to make a sender/receiver pair

This shield greatly expands the GPIO resources to 36 pins in total

1mm DC jack (just like the original) with 5V regulator to run on 7V-17V power

For instance

it can act as an extension cord for any 5

LiPo Battery Voltage Tester w/ Low-V Buzzer - 1S to 8S flexible led matrix If you want to makeLiPo Battery Tester & Low Voltage Buzzer 1S to 8S The LiPo Battery Tester & Low Voltage Alarm (1S8S) plugs into your LiPo pack's balance connector and displays individual cell voltages on a small screen. When any cell drops below a set threshold, a loud buzzer sounds preventing dangerous over discharge during RC flights or robot operation. Technical specifications Compatible packs 1S to 8S LiPo Display LCD (per cell voltage) Alarm Adjustable low