Ask Lemmy
A Fediverse community for open-ended, thought provoking questions
Please don't post about US Politics. If you need to do this, try [email protected]
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
view the rest of the comments
That's old power banks from decade ago. Majority if not all reputable powerbank brands now have charge passthrough.
Some will charge your device to full first, then disconnect the device and charge itself second.
Some will slowly charge both the device and the powerbank itself (I emphasize the Slowly part, probably at 5V 0.5A).
For OP, look for something on the packaging that indicates it have the mentioned above function.
HOWEVER! No good powerbanks will work as a UPS. Because they have built-in protection that will disconnect the power when fully charged or turn itself off when the plugged in devices is full.
I said "good powerbanks" because cheap, no-name one doesn't have those protections and will keep on trickle charging both itself and the devices, which is really bad.
Also, as a rule of thumb, you DO NOT want to plugged in your lithium battery at all times and keep it at 100%. That's the recipe for disaster waiting to happen.
A cheap or 2nd-hand acid-battery UPS can be bought for as little as $30-$50 on Ebay, even the smallest one will be capable of powering the noise machine for days.
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.