Li-ion battery indicator

243

03:42:31

Li-ion 3.7v battery indicator with 2 leds 

When the battery is charged the green led is turning on
When the battery is empty the red led is turning on and the green turns off

published 9 years ago

khelectronics

9 years ago

In this experiment how to turn on RED LED?

hurz

9 years ago

If the voltage drops below ~3.9V red led goes on. However, zener are far from accurate enough to handle LiIon batteries!

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