Battery pack voltage indicator - broken

Discrete components to show battery pack voltage. Single cell: Full: 4.2V Warning: 3.2V Empty: 2.8V Design: 6 leds: 80%-100% 5 leds: 60-75 4 leds: 45-65 3 leds: 25-45 2 leds: 5-25 1 led: 0 - 5 Pack: 12s -> 50.4V max