On Sun, 15 Oct 2017 19:27:29 -0400, rickman wrote:

> Martin Gregorie wrote on 10/15/2017 7:18 PM:
>> On Sun, 15 Oct 2017 19:06:33 -0400, rickman wrote:
>>
>>> Martin Gregorie wrote on 10/15/2017 6:30 PM:
>>>> On Sun, 15 Oct 2017 16:23:40 -0400, rickman wrote:
>>>>
>>>>> Also my scroll wheel won't work on their page and I think the
>>>>> product is not all that great.  The battery is only 300 mAHr which
>>>>> would give less than an hour run time even for a pi zero.  They make
>>>>> it way too hard to find out just what the various versions do with
>>>>> vague descriptions, "includes useful and innovative additional
>>>>> functions".
>>>>>
>>>> While I agree with everything you say about their web pages, their
>>>> product looks good, if not cheap.
>>>>
>>>> If all you want is a UPS with clean shutdown if the power doesn't
>>>> return within 20-30 mins, 300mAh is fine. But they also offer the
>>>> same board with a 3000 mAh external battery for either extended UPS
>>>> or for portable use of the RPi, i.e around 5 hours plus or minus a
>>>> few hours:
>>>> this looks reasonable to me.
>>>
>>> But you said it, the PRICE!  I don't expect to pay as much for the USP
>>> as I do for the pi or many times more if this is holding up the pi
>>> Zero!
>>
>> Indeed. But I might expect to pay *as much* or even a bit more (plus
>> battery) if it does what this one does. Why? Because production volume
>> and its effect on price.
>
> ???  And what is their production volume?  If they sell a good (or even
> OK product) at a good price it will sell in volume.  There are lots of
> applications where people want their pis to stay up 24/7.  Before I
> bought this thing, I'd buy a proper UPS that will also power other
> devices.  This also isn't exclusive to the rPi.  It can work with any
> embedded system.

Sure, but that is still a lot less than the number of Pis sold, most of
which have owners or users (especially the latter) who don't give a
monkey's whether its shut down safely or not.

I'd be surprised if even 1% of RPis are owned/used by people who
understand why they shouldn't just turn off the power whenever they want
or care about what it may do to their data - until their bum is bitten.

I don't use a UPS for my RPi, but I'm in a country with reliable mains.
In the 3 - 4 years I've had a UPS on my main Linux PC, which runs 24x7,
I've had one mains drop-out - and that didn't last long enough to force a
shut-down.  Since my RPi is only up a few hours a week I've not yet
judged it worth the effort to plug it into the spare sockets on the UPS
and to configure the UPS to shut it down if the UPS batteries get drained.


--
martin@   | Martin Gregorie
gregorie. | Essex, UK
org       |

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