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Simple deep discharge protection for battery operated sensors?

Maschler last edited by

Hello everybody,

I have a few mobile battery powered Ardruinos to measure the temperature. These are powered by 3 AA batteries. But always one of the three batteries is deeply discharged (0V!). To avoid this in the future, I wanted to ask if someone knows a simple circuit that prevents this? If it is possible, this circuit should not require much power.

Hope I am here in the right area of the forum
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@wrendral said in "Remote Irrigation with LoRaWAN: LM27313 Challenges and PCB Design": I will go with a Li-Po Battery type: 304048 3.7V 1200mAh Might work, but maybe the internal protection will trigger with the high current peaks. I'd suggest you plan a 0 Ohm, (2512/THT) resistor as R2 and then replace it with a 100Ohm/1Watt if the protection triggers.
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