12V Battery Level LED Indicator, 4 LEDs (20/50/80/100%)
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Prices updated: 13 Oct 2026
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About this product
A 12 V battery level indicator board with four LEDs that light progressively as voltage rises: red for 20%, two yellow for 50% and 80%, and green for 100%. Its 22.2 x 17.2 mm PCB makes it easy to fit into battery packs and small power projects as a quick visual check.
Specifications
- Supply voltage
- 12V
- LED count
- 4
- Level indication
- 20%, 50%, 80%, 100%
- LED colors
- Red, Yellow (2), Green
- PCB size
- 22.2 x 17.2 mm
Frequently asked questions
Does it show the true state of charge?
It reacts to voltage level. Under load the voltage drops, so the LEDs can show a lower level than the actual state of charge. Use a multimeter for accurate readings.
Is it suitable for lithium batteries?
The indicator follows voltage levels, so confirm that its thresholds match your battery chemistry, whether lead-acid or lithium, before relying on it.
