I have a protoboard with 5 temp sensors, connected to the Dash. I have a 2500mAh LiPo 3.7v. The battery usage is turning out to be more than I expected. I am currently sending data to thingspeak: https://thingspeak.com/channels/111108 The data you can see there includes battery voltage and %.
I am currently sending data every 3 minutes, and project I have a run time under 48 hours on a full charge. It would be nice to get to 7 or 8 days.
Do sleep and deepsleep offer a significant improvement?
Would it make sense to use a ‘power bank’ style battery?
Or would it be better to use a 3v like this?