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My offshoot rant is that it should be easier hold devices at a longevity charge. I want some gadget that keeps my essential gear in a long-term maintenance mod

My offshoot rant is that it should be easier hold devices at a longevity charge. I want some gadget that keeps my essential gear in a long-term maintenance mode. Oscillate it 20-80% or keep it at 50%, whatever is optimal. Every time I've looked into building something like this it seems like there's no standard reporting of charge level over the wire. I would waste a genie wish on this to have it in the USB spec and widely adopted.

tom_alexander 9mo ago
> it seems like there's no standard reporting of charge level over the wire Isn't that the "Battery_Status" message in the USB PD spec? Page 152 in this pdf: https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/138/USB_5F00_PD_5F00_R3_5F00_0-V1.1-20170112.pdf https://e2e.ti.com/cfs-file/__key/communityserver-discussion... Combine that with the "Battery_Capabilities" message (page 163) to get the total capacity, and you can calculate the charge percentage.