How to know the battery level of my Li-ion batteries with nrf51822https://devzone.nordicsemi.com/f/nordic-q-a/42862/how-to-know-the-battery-level-of-my-li-ion-batteries-with-nrf51822Hi everyone, I have a nrf51822 Bluetooth chip that control a stepper motor, this Bluetooth chip can be powered by a maximum voltage of 3.6V, but I need a higher voltage for my stepper motor (the driver of the motor works at least with 4.5V), and as Ien-USTelligent Community 13Tue, 22 Jan 2019 16:00:41 GMTRE: How to know the battery level of my Li-ion batteries with nrf51822https://devzone.nordicsemi.com/thread/167170?ContentTypeID=1Tue, 22 Jan 2019 16:00:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c7f67442-2003-4fd3-991a-970f76a161e7awneil<p>This is general - not specific to Nordic:</p> <p>Terminal voltage is a very poor indicator of battery capacity for lithium batteries!</p> <p>A so-called &quot;coulomb counter&quot; or &quot;gas-gauge&quot; chip will give far better results.</p> <p>But, to get the voltage down to a suitable level to feed the ADC, use a&nbsp;voltage (or &quot;potential&quot;) divider</p><div style="clear:both;"></div>