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rem736 · 12-02-2022, 08:10 PM

it's ok with a dead battery. i'll just connect to a computer to upload the photo when i need to change the photo. usb power from a computer should be sufficient to power it up. i just need it to have the ability to display that particular photo when it's powered down deliberately or when power is suddenly cut when disconnected from power.

in fact, if there is a device that can be powered by usb power alone without a connected battery, that may even be better because i don't need a dead battery to eventually bloat up enough to explode. with the photo set, in theory, i should be able to pull the usb cable while the photo is showing (cutting out power) and the photo should be static until the next time i reconnect it to power.

i remember seeing on an original sony prs-500 a static page of a book when it was completely dead. this suggests that the user left the reader on that page until power was completely drained. and that page was still very readable months later.

12-02-2022, 08:10 PM	#4
rem736 purpose priority passion Posts: 645 Karma: 9002000 Join Date: Jan 2010 Location: socal, usa Device: sony prs-350, b&n ngp, rM2, kindle scribe, boox poke5	it's ok with a dead battery. i'll just connect to a computer to upload the photo when i need to change the photo. usb power from a computer should be sufficient to power it up. i just need it to have the ability to display that particular photo when it's powered down deliberately or when power is suddenly cut when disconnected from power. in fact, if there is a device that can be powered by usb power alone without a connected battery, that may even be better because i don't need a dead battery to eventually bloat up enough to explode. with the photo set, in theory, i should be able to pull the usb cable while the photo is showing (cutting out power) and the photo should be static until the next time i reconnect it to power. i remember seeing on an original sony prs-500 a static page of a book when it was completely dead. this suggests that the user left the reader on that page until power was completely drained. and that page was still very readable months later. Last edited by rem736; 12-02-2022 at 08:22 PM.