FPV Battery tester/checker

thingiverse

A 3D printed battery tester/checker meant to be used to check the voltage of FPV batteries, but it can be multipurpose. It is compatible with PH 2.0, BT 2.0, XT30 and XT60 connectors. You can test batteries from 1S to 6S+ (maximum of 40 volts according to the datasheet of the voltmeter). The used voltmeter is a 0.28 Inch 2.5 V - 40 V Mini Digital Voltmeter for less than 1 euro on AliExpress. (Link: https://www.aliexpress.com/item/32718820423.html)I have added the step files so feel free to add more connectors or different features.All the connectors are in parallel, so make sure to never measure two batteries with different voltages at the same time or large currents will flow. It's best to measure one at a time. You could add protection diodes, but then there would be 0,7 V voltage drop and the values would be off.