On 09/12/2013 02:15 PM, Ralph Mowery wrote:
"Nate Nagel" wrote in message
You are talking about 12 volt devices, doesn't that connector have 24
volts on it ?

Inverters are often ran on other than 12 volts.



Dangit you're right!

I was getting the Tripp-Lite unit confused with the last one I replaced
the battery in... which was an old APC unit with a single typical 12V 7AH
security battery... the TL unit uses TWO batteries... and sure enough
they're in series! And the other two UPSes that I still have also use two
batteries as well, I gave the old one to a friend of mine a while back.

Well there goes a perfectly good idea.

I do have a 12VDC benchtop power supply as well as a CTEK battery charger
with a "power supply" mode so it's not like I can't make my stuff work. I
was just thinking that since the UPS was powered up all the time anyway I
could avoid adding any more transformer losses to the power bill... but
c'est la vie

nate

You need something like this $ 5 device including shipping to drop the
voltage at high efficency.

I would not take the maximum current they list as the actual ammount you can
use for long periods of time.

261222501361
eBay item number:



Interesting idea... however my battery charger's wall wart is rated at
12V 2A and I was hoping to be able to run 2 or 3 of these simultaneously
so that is probably pushing it. (I may be charging NiMH cells, NiMH
"9V" batteries, and/or Li-Ion cells, and that's three different chargers
unfortunately...)

nate

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