Ask Lemmy

26753 readers

1577 users here now

A Fediverse community for open-ended, thought provoking questions

Please don't post about US Politics. If you need to do this, try !politicaldiscussion

Rules: (interactive)

1) Be nice and; have fun

Doxxing, trolling, sealioning, racism, and toxicity are not welcomed in AskLemmy. Remember what your mother said: if you can't say something nice, don't say anything at all. In addition, the site-wide Lemmy.world terms of service also apply here. Please familiarize yourself with them

2) All posts must end with a '?'

This is sort of like Jeopardy. Please phrase all post titles in the form of a proper question ending with ?

3) No spam

Please do not flood the community with nonsense. Actual suspected spammers will be banned on site. No astroturfing.

4) NSFW is okay, within reason

Just remember to tag posts with either a content warning or a [NSFW] tag. Overtly sexual posts are not allowed, please direct them to either [email protected] or [email protected]. NSFW comments should be restricted to posts tagged [NSFW].

5) This is not a support community.

It is not a place for 'how do I?', type questions. If you have any questions regarding the site itself or would like to report a community, please direct them to Lemmy.world Support or email [email protected]. For other questions check our partnered communities list, or use the search function.

Reminder: The terms of service apply here too.

Partnered Communities:

Logo design credit goes to: tubbadu

founded 1 year ago

MODERATORS

[email protected]

If I have a USB powered device, could I leave it plugged into a portable power bank (like the kind you charge your phone with) as a power outage backup? (lemmy.world)

submitted 4 months ago by [email protected] to c/[email protected]

35 comments fedilink hide all child comments

Basically as the title says. We have semi frequent power outages where I live. The noise machine in my daughter's room goes out and wakes her up. If I were to buy a USB powered one, plug it into a power bank like one of those 10000ma ones you get for charging cell phones, would it have continuous power. Basically like a cheap UPS

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 3 points 4 months ago

That is definitely still a premium power bank feature. I've got a few newer ones that have full pd capability etc and they still don't do both.

Lithium ion are fine in a UPS capability, they just need to be treated right. What most do is pass through to a boost buck converter. The external power passes through via a diode. When the external drops, the battery takes over instantly. Critically, when powered, the li ion is effectively disconnected.

Raspberry Pis often require this capability, so most usb UPS units mention raspberry pi, making it a useful search finder.