I've collected some hacks from our kernel team and tested the idle time on battery on my Librem 5 Birch - got almost exactly 6 hours while staying at 38°C the whole time. Not that long ago it struggled to reach 3h and stay under 60°C - and they're not done yet! :D

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That's with the screen, modem, WiFi and USB off. Modem probably wouldn't influence it that much though.

Oh, and that's of course on the 2000mAh battery. The final model is going to have a 3600mAh one :)

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@dos The modem influences it based on how far away you are from a tower. The weaker the signal you have, the more power the modem consumes trying to broadcast a signal to the tower

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