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A comment on How I use my Raspberry Pis to help me work on with my side projects. Parent comment

Re:How I use my Raspberry Pis to help me work on with my sid... by ishanjain28 on Friday January 18, 2019 @04:39AM (#18938149)
I have been using Mi powerbank 2i for my Rpis for last 9 months or so. I have had zero issues with it. The advantage of using 2i are,

1. It's dirt cheap than any other solution I found($15, I use 10k mah version)

2. I can plug RPi to it and I can plugin a charger in 2i. When the main power cuts off, It'll instantly switch over to battery with 0 downtime. I think this is called passthrough charging)

3. It can provide 2.5 or 3.5 amps(not sure about exact value) output

4. It has two ports

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Re:How I use my Raspberry Pis to help me work on with my sid... by thinkmassive on Friday January 18, 2019 @10:09AM (#18939778)
> 2. I can plug RPi to it and I can plugin a charger in 2i. When the main power cuts off, It'll instantly switch over to battery with 0 downtime. I think this is called passthrough charging)

This alone is a killer feature that’s far less common than I expected before I started searching for it. Most power banks cut off output while they’re charging, and many require physically re-plugging the device to start powering it again.

I ended up acquiring a PiJuice for this functionality alone.

https://github.com/PiSupply/PiJuice

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Re:How I use my Raspberry Pis to help me work on with my sid... by clanrebornyes on Friday January 18, 2019 @05:25AM (#18938327)
How many hours it lasts?
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Re:How I use my Raspberry Pis to help me work on with my sid... by ishanjain28 on Friday January 18, 2019 @01:42PM (#18941658)
I have never measured it. At worst the main power has gone down for a 2-3 hours and it lasted at least as much. I don't have a USB power meter to measure the power taken by the Rpi so I can not give you an exact number but I would guess it to be at least around 5-10 hours if not more.

Edit: Someone linked pijuice project. I went to their website and according to them, Their 10k mah version lasts 24+ hours

> Onboard 1820 mAh off the shelf Lipo / LiIon battery for ~4 to 6 hours in constant use! (with support for larger Lipo Battery of 5000 or 10,000 mAH+ to last up to 24 hrs +)

https://uk.pi-supply.com/products/pijuice-standard

So, I would say 2i would probably last about the same?

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