Turnigy MultiStar 3S LED battery meter

thingiverse

In a chaotic accident, I tore off one of the balance leads from my Turnigy MultiStar 1400mAh 3S 65C battery. Since I didn't need the LED meter, I pulled it out before resoldering the stray wire and created a small case for it to avoid wasting the nice PCB. There are four letters on the front of the case besides LEDs, representing cell voltage of the inline LED: F stands for full charge at 4.2V, S for storage mode at 3.8V, L for low power at 3.6V, and C for critical level at or below 3.3V. **CAUTION:** designed specifically for 3S (11.1V) only! May not work properly with higher voltages (I should study the circuit more closely), plus it won't show the correct charge level anyway.