When the battery voltage is above 5.1 volt, zener provides regulated 5.1 volt to pin3 of IC and its output goes high to light LED. It indicates that battery is full. If the voltage in the battery ...

The following circuit uses a low-power CMOS comparator and an LED to indicate low-battery voltage without causing excessive current drain. To view the application note, click ...

Up to now, this battery level indicator design was limited to 12 & 24V applications. In past circuits, the use of fixed resistors greatly simplifies setup. However, fixed resistors resulted in ...

In the circuit, U1 is the PIC16LF84A microprocessor. R1 and D1 make up the low-battery indicator circuit. R2 is a 10-k Ω pullup resistor for the MCLR pin. X1 is a low-power 32.768-kHz oscillator.

No dot (a dark indicator) means the battery is low and should be recharged before it is returned to service or tested further.

A Low Battery message will appear next to the AirTag if the level is low. While Apple has never displayed the AirTag's battery percentage, it previously showed a battery indicator in the Find My app.

He discovered that the HP-25’s internal low battery circuit was triggered by a voltage of 2.1 volts or lower.

In here, we will talk about Bose Soundlink Revolve and the troubleshooting methods that you can do to fix Bose speaker battery indicator always shows a red light or low charge blinking red light.

Why does your iPhone have a Yellow Battery? It is running in Low Power Mode, a power saving mode designed to save your iPhone's battery.

In iOS 15.6 and the latest iOS 16 beta, Apple appears to have intentionally removed the AirTag battery indicator in the Find My app. In previous versions of iOS, a small battery icon, similar to ...

If your laptop Battery indicator icon showing the battery as empty in spite of being full, read this post to learn how to fix it!