look into using WAKE lock rather than keepawake

[shaunmulligan]

After doing some basic power testing, I think having the screen always on is gonna impact battery pretty heavily. We should look at something like https://www.npmjs.com/package/react-native-wake-lock as holding the wake lock allows an app to keep using the CPU even when the screen is switched of or sleeps. We could then allow the user to be more agressive with their screen sleep time setting to save battery.

[craigmulligan]

Yip! Another option is to run all our services in a background fetch event. https://docs.expo.dev/versions/latest/sdk/background-fetch/

[shaunmulligan]

Interesting! Haven’t seen that api, wonder if Bluetooth sensors would work from there? I thought there were some timing limits for background tasks

[craigmulligan]

Yeah, I'm not sure. Everything say it allows a "short" period of interactivity.

[shaunmulligan]

yeah at some point we can just do some experiments and see what kinda power usage we get with each option