David Taylor wrote on 6/30/2017 4:19 AM:
> On 29/06/2017 15:30, rickman wrote:
>> David Taylor wrote on 6/29/2017 3:33 AM:
> []>> Rick,
>>>
>>> This one (or similar) on Amazon US claims to be a UPS, and just needs 6
>>> 18650 batteries.
>>>
>>>
>>>
https://www.amazon.com/Feamos-Mobile-Battery-Charger-Universal/dp/B01H52KI70/re
f=sr_1_2?ie=UTF8&qid=1498721130&sr=8-2&keywords=power+bank+ups#Ask
>>>
>>>
>>>
>>> but also mentions a 1-second gap.  Sigh!
>>
>> I assume you mean when disconnecting the input power it takes 1 second to
>> restore power to the output?  I didn't see anything that mentions that.  I
>> did see one review that said it can't generate output voltages above 12
>> volts when being charged, but that wouldn't be a problem for the rPi.
>>
>> Seems this unit has a buck converter to generate voltages below 12 volts
>> and a separate boost converter for voltages above 12 volts all selected by
>> a pair of slide switches.  I am guessing the boost converter is reused for
>> the charging circuit so the higher voltages are not available when charging.
>
> The unit has a 5V/2.1A USB outlet, which I would expect you to use for the
RPi.

Not sure what your point is.  What your wrote has nothing to do with what I
wrote.

--

Rick C

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