I am thinking of using an ESP32-CAM with external wifi antenna (to send a 500k bytes in a range of more than 100m) and a 3.3/3.7v LiPo battery which sould last about a month (744h). Concerning the power I am planning to keep the ESP32-CAM in sleep mode almost in 80% of the time which means the whole module will consume about 60mA. So a perfect battery should deliver about 45000 mAh but there is no such 3.3 V LiPo.
I guess I need to use multiple batteries in parallel but I need to know the maximum (mAh) a 3.3 V LiPo battery can deliver. I also guess that there are no 3.3 V batteries big enough, only 3.7 V batteries. Plus is it easy to charge it with a dedicated charge station like a Bat-Safe LiPo charge station?