When the electrical power goes out, I have to charge my phone by turning the >car on to the accessory position which isn't likely good for the car's >electronics.
In my spare parts box is a Lorex DVR Model #LH030800 (mfg 3/2015) with no >power cord. The power receptacle at back seems to be the typical round
center positive 12VDC input though, which may work off a spare car battery.
It even has an RS485 in back with the plus and minus well marked.
The DVR has two USB type A receptacles, one in back and one in front.
Do you think if I craft a suitable power cable with clips fitting a 13 to >15VDC (nominally 13.8VDC) car battery that this spare DVR can serve as an >emergency phone charger when the electrical power goes out?
Ron, the humblest guy in town.
It will work with your charger just fine. Just make sure that the
Lorex DVR power supply has the + on the center pin, and the - on outer sleeve. Acceptable voltage range for automobiles can be anything
between roughly 11 to 16V (or more) so you're not going to blow up the cigarette igniter to USB adapter.
The only question, really, is whether the car battery itself can power the >Lorex DVR Model #LH030800 sufficient for the two USB-A ports to work.
When the electrical power goes out, I have to charge my phone by turning the car on to the accessory position which isn't likely good for the car's electronics.
In my spare parts box is a Lorex DVR Model #LH030800 (mfg 3/2015) with no power cord. The power receptacle at back seems to be the typical round
center positive 12VDC input though, which may work off a spare car battery.
It even has an RS485 in back with the plus and minus well marked.
The DVR has two USB type A receptacles, one in back and one in front.
Do you think if I craft a suitable power cable with clips fitting a 13 to 15VDC (nominally 13.8VDC) car battery that this spare DVR can serve as an emergency phone charger when the electrical power goes out?
Ron, the humblest guy in town.
My apologies for providing such vague information, but you haven't volunteered any model numbers, specification, or measurements for me
to do much more than approximate. Fortunately, the calculation above
is easy enough to modify.
On Oct 03, 2021, Jeff Liebermann wrote
(in article<news:5m2ilghnt0fb0udgn3mrv7jnqhuhfsdvpg@4ax.com>):
My apologies for providing such vague information, but you haven't
volunteered any model numbers, specification, or measurements for me
to do much more than approximate. Fortunately, the calculation above
is easy enough to modify.
My apologies. Here is a photo of the insides and the model number plate. >https://i.postimg.cc/pVgpNhY1/inside.jpg >https://i.postimg.cc/9f8QLrQb/outside.jpg
The Lorex DVR will output to the two USB A ports to charge my phone.
There is no car involved. Sorry for the confusion. I didn't explain well.
The only question, really, is whether the car battery itself can power the Lorex DVR Model #LH030800 sufficient for the two USB-A ports to work.
Ron, the humblest guy in town.
On 10/2/2021 8:03 PM, RonTheGuy wrote:
The Lorex DVR will output to the two USB A ports to charge my phone.
There is no car involved. Sorry for the confusion. I didn't explain well.
The only question, really, is whether the car battery itself can power the >> Lorex DVR Model #LH030800 sufficient for the two USB-A ports to work.
Ron, the humblest guy in town.
That sounds like Rube Goldberging it.
I'd suggest, instead, something like >https://smile.amazon.com/StickyDeal-2-Pack-Converter-Adapter-Step-Down/dp/B09B2Y71F7/
.
I have several that are shaped into a accessory-jack sized housing wired
into my dash; and a couple of flat buck converter boards around for
extra USB ports in my truck. Same thing will work for your charging at
the house.
THESE are encapsulated to keep any short damage out.
And avoids the load of that DVR on the battery while charging the phone.
RwP
On Sun, 3 Oct 2021 21:50:05 -0500, Ralph Phillips <ralphp@philent.biz>
wrote:
On 10/2/2021 8:03 PM, RonTheGuy wrote:
The Lorex DVR will output to the two USB A ports to charge my phone.
There is no car involved. Sorry for the confusion. I didn't explain well. >>>
The only question, really, is whether the car battery itself can power the >>> Lorex DVR Model #LH030800 sufficient for the two USB-A ports to work.
Ron, the humblest guy in town.
That sounds like Rube Goldberging it.
I'd suggest, instead, something like >>https://smile.amazon.com/StickyDeal-2-Pack-Converter-Adapter-Step-Down/dp/B09B2Y71F7/
.
I have several that are shaped into a accessory-jack sized housing wired >>into my dash; and a couple of flat buck converter boards around for
extra USB ports in my truck. Same thing will work for your charging at
the house.
THESE are encapsulated to keep any short damage out.
And avoids the load of that DVR on the battery while charging the phone.
RwP
I agree. Much better. I just ordered two of them on eBay: <https://www.ebay.com/itm/321645899181>
Time to get rid of the cigarette igniter to USB adapter, hose clamp,
and clip lead abomination. I was going to build my own from one of
the buck inverter boards found on eBay, but this looks better. Thanks.
We need to understand the purpose of this group - which is to give the most complicated and unsuitable possible solution to the simplest request entirely without reference to common sense, life-safety or cost.
Peter, I've noticed that Jeff Angus hasn't posted lately. Any idea why?
Peter, I've noticed that Jeff Angus hasn't posted lately. Any idea why?Alive and well, still in Ranger, TX.
Why would anyone propose any other solution when that ebay url points
you straight to a 2000 amp hour solar usb charger for $17.
On 10/3/2021 8:50 PM, Jeff Liebermann wrote:
....
Also, I forgot to mumble that I have several large "USB power bank"
devices made to power smartphones. Something like these:
<https://www.ebay.com/sch/i.html?_nkw=usb+battery+power+bank>
<https://www.google.com/search?q=usb+power+bank&tbm=isch>
I bought most of mine at a garage sale, where the former owner somehow
killed most of the 18650 LiIon cells. They were moderately easy to
replace with a (borrowed) spot welder and some nickel flat wire.
Why would anyone propose any other solution when that ebay url points
you straight to a 2000 amp hour solar usb charger for $17.
https://www.ebay.com/itm/224104772302 (Tracking junk removed from URL)
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