Quick and Simple LIPO Voltage Tester

thingiverse

This was a rush job for checking LIPO voltages before parallel charging and also works to check individual cell voltages of multi-cell batteries or anything using a 0.1" pitch connector. I already had one of those cheap chinese LED voltmeters and just created the 3D printed housing and added the test probes. (Print it upside down!) Instructions This uses two pins of a header strip for the probes and the red and yellow wires are connected together so the battery under test is also powering the DVM supply voltage. The LED display is 22.5mm x 10mm and this unit has reverse-voltage protection built in. The red and black markings are small pieces of 1.75mm filament pressed into the slots. Once wired up and tested, the inside gets filled with hot glue. Amazingly, the heat didn't melt the PLA case. Before assembling, cut off the mounting tabs. Decide whether you'll hold this meter in your left or right hand and position it accordingly to see everything clearly.