Voltage source of Ecg Sensor

Hardware used:
1.ESP32 DEVKIT MODEL
2.AD8232(ECG SENSOR).

Hello , i am facing an issue in which i need to give my ecg sensor 3.3v but the problem is i already have too many sensors connected to my esp32 already and i want now to use an external source to power my AD8232(ECG sensor) .So i was thinking would 2AA batteries with 1.5 each would work or not ?
I am open to suggestions
Thanks

if a chemical cell is new and not lost part of power then some sensors will good powered from it.

The question is "tolerance" of the ECG board. Can the 3.3v ECG board use 3.0v?

You can't give it a third AA for 4.5vdc because...

ABSOLUTE MAXIMUM RATINGS
Supply Voltage 3.6 V

Maybe use 6vdc (4xAA) and a buck converter to get 3.3v?

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