Purism, can you also add the voltage/ampere/watt specs for both input and output, usb-pd protocol support if applicable, and size/weight?
edit: can one replace the cells in the powerbank?
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I’ll forward this request to my colleagues in charge of the webshop.
No, and we do not recommend that users try that.
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I was about to purchase a power bank with 20k mAh. Somehow, the option disappeared all of a sudden? I get that sometimes downsizing on the offer for the matter of flexibility and simplicity is the greater benefit. The options are still presented on the flexible offer instead of fixed offers. Speaking of options, I was wondering if there can be even higher mAhs? If so, what be the physical size dimension?
Maybe I should wait a little longer for a chance of (bigger and) better power banks. I mean, the Liberty is a somewhat upgraded Librem 5. Surely, the same pattern behavior would follow up for power banks?
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Maybe Purism isn’t up to par on the power supply department, I mean, it’s a lot to go on considering software and hardware development.
Instead, I will look at the aftermarkets to help pitch in supply to the demand.
I read that MAXOAK can boost plenty of power with a bit of cost in a larger size dimension, but nothing too serious. It even got laptop charger ports. We’re talking about 50k mAh here. I wish for even more power, maybe even 100k mAh. I want a power supply that could last (probably consistently) for around a week, when recharging is usually convenient for off time schedule. Of course, I also consider on calls schedules as well. However, I could settle for less uptime. I mean, the power consumption is dependent on how often I utilize the equipment. This product could be the model goal for the Librem power banks. Still, its size is definitely larger, even bulkier, than your smartphone size. Inventory management strikes again, ah.
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It looks to me like those specifications were never added.
Does anyone have experience with the Librem power bank? Is it reliable and reasonably rugged? Does it last a reasonable number of power cycles? Will it fully recharge a Librem 5 twice without needing a recharge itself?
Also is it suitable for use as a UPS for a Raspberry Pi? (Connect it to a charger and connect a Raspberry Pi into it, when bank is fully charged, Pi runs off charger, if power is cut, Pi runs off power bank.)
Can anyone recommend other power banks?
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Just to make sure you are aware, the shop says it is currently out of stock.
As for your other questions, I do have a Librem power bank. In my experience it is able to charge the phone about twice from about 20% - 100%.
As for using it as a UPS for a raspberry pi, I am not sure. I also have a lapdock from Nexdock and the power bank is unable to charge it at all, so it may not have enough output. The power bank maxes at 18W
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Yes, assuming you are referring to the 10,000 mAh version and not the discontinued 20,000 mAh one.
Define a criteria.
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As implied in my earlier post, not junk, doesn’t mechanically or electrically fail under light use after a few months, labeled capacity isn’t fiction.
Nice to have, but not required, ability to function as UPS for small devices containing a computer. (Computer doesn’t crash when power is cut. I have a Raspberry Pi power supply hat which fails in this regard.)
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Which Raspberry Pi model (and peripherals) are you trying to keep powered on with a power bank?
Still waiting for the 20K to be back in stock
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Various models, wifi dongle, 8x8 LED hat.
Perhaps I should clarify that running the Pi from a power bank for up to a few hours is not the problem. The problem is handling AC power going off or back on. I had a quite small power bank from 20 years ago that handled that just fine multiple times, but it eventually died.
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Okay, here is my recommendation:
This was one of the many power banks I previously used for my Librem 5 USA. Its major benefit is that it has AC plug power pass-through, so you can charge the power bank and at least one other device simultaneously. The tradeoff is that the capacity is limited to 5,000 mAh.
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Thanks. Given its other design aspects, the low capacity is understandable, and it is better than nothing.
All:
I’m still interested in 10AH and larger power banks that are not junk and I guess I should also ask for a list of ones to avoid and why to avoid them. Again, the ability to function as a sort of mini UPS would be a bonus and not a requirement.
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Sure, then you may want to start off with a Wirecutter article:
I am still juggling power banks at the moment, but I am thinking about acquiring something more substantial like the Anker Prime B1340:
To give you some understanding of my thought process, I want exactly one power bank to handle any task I throw at it, while not requiring airline/carrier approval. This one is 99.54 Wh @ 3.6 V, which is just barely under the 100 Wh permitted on passenger aircraft:
https://www.faa.gov/hazmat/packsafe/lithium-batteries
Power Delivery 3.1 is also a requirement to efficiently charge other demanding devices such as laptops.
I suggest avoiding power banks with built-in cables since they cannot be replaced. For usability, I would also suggest avoiding products where all charging ports cannot be used simultaneously.
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