10 questions linked to/from Low current battery monitoring
269 views

### Measure voltage using transistor with strange behaviour [duplicate]

I'm facing a problem that is completely strange for me. This is simple, I build a small electronics device and in that one I just set up a voltage bridge divider to obtain battery voltage to be able ...
273 views

### How do I implement a simple and efficient voltage divider for battery level readings for a ESP32 board?

I'm trying to design a simple device based on ESP32 board, which will control stepper motors from a battery pack (26650 series). I'm struggling with the battery level control part (red/blue colour ...
2k views

### Low power battery voltage monitor

I would like to measure the battery usage of my ESP32 device. As my device runs in deep sleep mode 99% of the time, it's important that the battery monitoring circuit does not add too much to the ...
585 views

### Low Current Battery Monitor Detail Question

I'm trying to design a circuit that will be running from a battery. I'm currently working on the part that detects the voltage and came across this question (and answers) here: It made pretty good ...
1k views

### How to find battery voltage with simple voltage divider circuit connected to ADC of microcontroller? [duplicate]

The problem with circuit is that it may give same ADC value even when the voltage of battery drops.....so please give me suggestions on that...thanks in advance.
349 views

### Maximum forward current on ESD diodes

I'm interfacing a dsPIC33EP512MC806 with a set of analog systems. The analog systems manage a battery and have vregs for the digital systems. The analog systems measure the voltage and current ...
495 views

### Selecting low power mosfet for battery monitor

I'm trying to implement og test the results discussed in the linked JeeLab post in a low power battery powered device. http://jeelabs.org/2013/05/18/zero-power-measurement-part-2/#comments The post ...
262 views

### Picking correct level of resistance for a voltage divider

I want to measure my DC voltage source (aka batteries), vs my known Dc voltage from my DC-DC regulator. To do this I'll need a voltage divider. I can calculate the resistances I need - but what I'm ...