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echo: rberrypi
to: FOLDEROL
from: CHARLIE GIBBS
date: 2017-08-27 16:39:00
subject: Re: COTS Battery Backup

On 2017-08-26, Folderol  wrote:

> On 24 Aug 2017 00:15:33 GMT
> Charlie Gibbs  wrote:
>
>> On 2017-08-23, Folderol  wrote:
>>
>>> First off, charge voltage is inversely proportional to temperature, and
>>> one of the companies I contacted was kind enough to send me a schematic
>>> of a simple compensated voltage regulator, with a thermister which had
>>> to be *in* *Thermal* *contact* with the battery under charge. Of course,
>>> nobody does that these days, they just rely on the ambient temperature
>>> being the same - thats if they bother with temperature compensation at all.
>>
>> s/nobody/hardly anybody/
>>
>> Here's one that does:
>>
>> http://www.batteryminders.com
>
> Well that rather proves how out of date I am :)
>
> Looks like a nice range of kit, and I see they do support an optional
external
> temperature sensor, although it's for the ambient temperature in the vicinity
of
> the battery not in contact with it.

On mine the sensor is mounted in a lug that you can attach to one of the
battery terminals along with the charging wire.

--
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