@Apu Regarding the sleep schedule, there’s currently no option to change it.
It’s worth noting that the data transmission (posting data to the AirGradient server) frequency on Wi-Fi mode is more frequent than on cellular mode.
For the power bank thingy, I have done my personal experiment. @Rog is right that some power banks have a low-current mode.
In my case, my Xiaomi Power Bank PB1030ZM, I can double-press its button to trigger that mode and just single-press the button to return to normal. However, my PB1030ZM stopped powering my Open Air Max (I connected the Open Air Max to the power bank’s USB-A port) after a big while, even though the power bank was in low-current mode.
Here are some conclusions from my experiment:
Open Air Max + Xiaomi PB1030ZM
- Low-Current Mode USB-A stops working after a long while (as mentioned above).
- Normal Mode USB-A stops working after a while (not so long).
- Normal Mode USB-C works normally (tested for 10+ hours without issue).
- Normal Mode USB-A + Sonoff Micro (a smart Wi-Fi USB switch) sits in between, works normally (tested for 10+ hours without issue). The concept of this workaround is the same as @MallocArray mentioned about using the LED coil.
Open Air Max + Cuktech PB100P (partial tests)
- Normal Mode USB-A stops working after a while (not so long).
So it looks like using USB-C ports instead of USB-A is a good idea to try.
Any trouble getting your batteries to charge up? I’m not getting above about 10.6V whether I have the unit inside (constant 68°F/20°C, but looking out through a window) or outside (40-60°F/4-15°C, direct sunlight).
(Other solar powered items have not had an issue charging through the same window so I doubt the glass is that much of a barrier.)
I’ve had plenty of issues with the solar panel and battery life. I’m currently running it with Wifi to see if that was any less power consumption but doesn’t appear to be. When mine has fully drained the batteries, even when in the full sun it takes a few hours to start reporting at all and then it has been showing 0.2 v for the batteries.
After 2-4 hours in direct sunlight the batteries can only last for about 4 more hours before it stops reporting.
I’m still working with support on options and things to try.