Whilst anything is possible, I do wonder if a Pi is the most suitable device for your project.
I have a PiZero2W on the bench consuming just under 650 mW at idle.
Not sure on the power draw for the PiZero1W, Jeff Geerling got as low as 80mA (~ 400mW) at idle with LED and HDMI disabled as well as a few other things.
Best case scenario (unrealistic) you're looking at 3,500 watt hours per year.
In terms of the PiJuice 12000mAh battery that is 79 of those batteries assuming 100% efficiency in the step up to 5v (not possible).
A micro controller might be a better choice depending on your needs.
Depending on how often or timely the display update is needed you could have a micro sleep for 5 minutes and then wake up and poll for an update before sleeping again.
The RP2040 for example consumes about ~180μA in sleep, 1/1000th of what the pi draws at idle.
If solar is an option you could go for a 10-15Ah 12v LiFePo4 battery with a the most efficent 5v 1A buck regulator you can get hands on, and pair that with a small and efficent MPPT solar charger and 10-20 watt solar panel.
TLDR - None of the batteries you've selected will do the job.
You might get 3 days out of the PiJuice 12000mAh Battery
Sounds like a better job for a micro controller.
I have a PiZero2W on the bench consuming just under 650 mW at idle.
Not sure on the power draw for the PiZero1W, Jeff Geerling got as low as 80mA (~ 400mW) at idle with LED and HDMI disabled as well as a few other things.
Best case scenario (unrealistic) you're looking at 3,500 watt hours per year.
In terms of the PiJuice 12000mAh battery that is 79 of those batteries assuming 100% efficiency in the step up to 5v (not possible).
A micro controller might be a better choice depending on your needs.
Depending on how often or timely the display update is needed you could have a micro sleep for 5 minutes and then wake up and poll for an update before sleeping again.
The RP2040 for example consumes about ~180μA in sleep, 1/1000th of what the pi draws at idle.
If solar is an option you could go for a 10-15Ah 12v LiFePo4 battery with a the most efficent 5v 1A buck regulator you can get hands on, and pair that with a small and efficent MPPT solar charger and 10-20 watt solar panel.
TLDR - None of the batteries you've selected will do the job.
You might get 3 days out of the PiJuice 12000mAh Battery
Sounds like a better job for a micro controller.
Statistics: Posted by v81 — Tue Jan 23, 2024 6:57 am