Battery level indicator

Published Jul 13, 2020

Apache-2.0

1 hours to build

Beginner

electronics

DIY Simple battery level indicator

Components Used
LED 5mm LED 5mm	X 1
Resistor 1 kOhms Metal Film Resistors - Through Hole 1K ohm 1/4W 1%	X 1
12V Rechargeable Lithium Iron Battery LiFePO4 - Lithium Iron Phosphate Battery 12V 7.5Ah LiFePO4 5.95 x 2.56 x 3.70"	X 1
Breadboard Breadboard	X 1
Connecting Wire Jumper Wires Connecting Wire Breadboard wires	X 1

Description

This is the very simple DIY Li-Ion Battery LED Level Indicator can be used for Li-Ion based batteries or power banks Power Bank, etc.

In this project I used only a few components, to monitor Li-polymer battery level conditions in Low, Medium, High, and Full level. I used here only two LED’s but you can use different colors, for example, If battery drop in medium level, red LED become lights up and brighter if the battery in low-level condition.

Note: In this project I used Li-polymer battery only for testing purpose but you cannot use to monitor Li-polymer battery (because of internal structure of battery) for this battery level indicator.