Hello, I’m running my TTGO ESP32 using a 163403.7 v 800mah battery. When measuring the battery with the device awake and the screen on the voltage is for example 3.0 v and when I put the device into deep sleep the ...Read more
Hello,
I’m running my TTGO ESP32 using a 163403.7 v 800mah battery. When measuring the battery with the device awake and the screen on the voltage is for example 3.0 v and when I put the device into deep sleep the battery rises to 3.2v. I’m using MCP130- 315HI/TO administrator to monitor the battery voltage and the issue is that the voltage drops below the administrator threshold and it pulls the reset low turning off the device but also when the device is off the battery voltage rises over the administrator cut off and powers the device back on causing the battery voltage to drop again and so on. Any idea how to get around this issue?
Thank You
Vikas Nagpal
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Hello, A battery with lower ISR/advanced current capability might mitigate the issue because the drop/ rise of the voltage would be lower, ideally staying below the hysteresis of the battery covering chip, so that once the turn-off threshold is reached the voltage will not rise above the turn- on thRead more
Hello,
A battery with lower ISR/advanced current capability might mitigate the issue because the drop/ rise of the voltage would be lower, ideally staying below the hysteresis of the battery covering chip, so that once the turn-off threshold is reached the voltage will not rise above the turn- on the threshold by itself again.
A beefy capacitor in parallel with the battery will also reduce the battery’s apparent impedance, reducing the amplitude of voltage drops caused by spikes in current consumption.
Thank You
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