I read about one of those that is already pre-packaged in a lead
coffin. It does have a bad history with 3 kills and about 1/2 dozen
sickened... You have to provide the deuce and 1/2 with the shielded
drivers compartment.
On 8/15/23 4:52 PM, Chuck McCown via AF wrote:
I got some old Russian thermo electric generators that are self
heating. They are pretty good for things like this. You will have to
pick them up though, Sakhalin Island.
Best Regards,
Chuck McCown
McCown Technology Corporation
8401 N Commerce Dr
Lake Point, Utah 84074
801-250-9503 Office
435-830-4306 Cell
www.mccowntech.com
www.microtrench.pro
www.terabitnetworks.com
*From:* Dennis Burgess
*Sent:* Tuesday, August 15, 2023 2:36 PM
*To:* AnimalFarm Microwave Users Group
*Subject:* Re: [AFMUG] battery nerd question
You can use 9dot and do your power control, dc in on solar panels 48
volt system.. Just another option, lots of reporting and metering
there..
*LTI-Full_175px*
*Dennis Burgess, Mikrotik Certified Trainer
MTCNA, MTCRE, MTCWE, MTCTCE, MTCINE, MTCSE, HE IPv6 Sage, Cambium ePMP
Certified *
Author of "Learn RouterOS- Second Edition”
*Link Technologies, Inc*-- Mikrotik & WISP Support Services
*Office*: 314-735-0270 Website: http://www.linktechs.net
<http://www.linktechs.net/>
Need to Automate MikroTik Backups: https://cloud.linktechs.net
<https://cloud.linktechs.net>
Create Wireless Coverage’s with www.towercoverage.com
<wlmailhtml:www.towercoverage.com>
*From:* AF <[email protected]> *On Behalf Of *Josh Luthman
*Sent:* Tuesday, August 15, 2023 11:36 AM
*To:* AnimalFarm Microwave Users Group <[email protected]>
*Subject:* Re: [AFMUG] battery nerd question
OMG get meters. The panels and batteries will cost more up front and
they won't last as long. Solar sucks here in Ohio, it's only going to
be worse where you're at.
On Tue, Aug 15, 2023 at 11:54 AM Steve Jones <[email protected]> wrote:
we have a dozen or so, but are looking at pole mount micropops
(our own poles). We are losing a grain elevator site because they
decommissioned the elevator and theres no real options for the
customers in some of the areas. Im just trying to get to something
we can get solar power with enough battery to last through
overcast. So Im calculating per battery runtimes, then will look
at number of batteries we would need to survive vs paying for a
ROW meter vs losing the customers. Just have to get to the cost
per customer to retain them and the benefit gained per pole
On Tue, Aug 15, 2023 at 8:53 AM Brian Webster
<[email protected]> wrote:
How many of the batteries do you have? Do you need any
voltages other than the 48 volts? If you have 4 batteries and
only need 48 volts then wire them in series and not have to
deal with the converter.
Thank you,
Brian Webster
*From:*AF [mailto:[email protected]] *On Behalf Of
*[email protected]
*Sent:* Tuesday, August 15, 2023 6:59 AM
*To:* 'AnimalFarm Microwave Users Group'
*Subject:* Re: [AFMUG] battery nerd question
*You’re around C/30 which should be on the high end /of
capacity/.
Lower load usually means a little extra capacity out of the
battery. I realized that sentence might have been ambiguous.
*From:* [email protected] <[email protected]>
*Sent:* Tuesday, August 15, 2023 6:56 AM
*To:* 'AnimalFarm Microwave Users Group' <[email protected]>
*Subject:* RE: [AFMUG] battery nerd question
You can do the whole thing in Watts.
12V * 150ah = 1800 Watt-hours
1800Wh / 50W = 36 hours
If they’re telling me 95% efficiency, I’d assume 50W out needs
53W in (50 / 0.95).
There’s usually an efficiency curve for the device based on
load and temperature so it wouldn’t be 95% in all
circumstances. Your system should be drawing less than 5A off
the battery, and if your multimeter has a 10A fuse like most
do, then you could put the meter in line and actually measure
the amperage before and after the converter. Then you’d know
for sure.
And the battery’s total capacity will have a curve based on
C-rate so there’s some variability there too. Usually it
lasts longer when you’re drawing lower amperage. You’re
around C/30 which should be on the high end.
Age and maintenance of the battery affect runtime as well. If
I want 6 hours of runtime then I plan Ah for 12 hours runtime.
When my batteries are halfway toasted I’m still getting useful
life out of them.
*From:* AF <[email protected]> *On Behalf Of *Steve Jones
*Sent:* Monday, August 14, 2023 9:57 PM
*To:* AnimalFarm Microwave Users Group <[email protected]>
*Subject:* [AFMUG] battery nerd question
Just trying to cipher runtimes
I have on hand 150ah 12 volt batteries, so thats what id be
looking to use.
Excluding the conversion loss of a 12v to 48v step up
converter is the math correct here?
12v 150ah=1800 watt hours
1800 watt hours at 48v = 37.5ah
50 watts of radio running 48v = 1.04 amps
37.5ah @ 1.04 amps = 32.77 hours runtime
does a step up that claims 95% efficiency mean 95% of the watt
hours?
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