"
For that..you need a British phone both IRRC.

Gunner


I need a new battery for my Tardis!

Tom Gardner wrote:

"
For that..you need a British phone both IRRC.

Gunner


I need a new battery for my Tardis!

Borrow one from K-9...

Pete C.

Would a 12 V deep cycle- Optima work in a APC-UPS 1400R I keep my servers
and dyno on with it along with some routers and switches. I don't know the
output, the battery fails and I now have it frightfully bypassed. The
batteries died and are almost 2 bills to replace. voltages ? issues? but I
have a few Optima batteries from wrecked race cars that would be perfect!

Any input would be appreciated,
Rob


Fraser Competition Engines
Chicago, IL.
"Pete C." wrote in message
...
Tom Gardner wrote:

"
For that..you need a British phone both IRRC.

Gunner


I need a new battery for my Tardis!

Borrow one from K-9...

Pete C.

On 20 Nov 2005 21:14:33 -0800, "Too_Many_Tools"
wrote:

I am the "lucky" owner of a number of older UPSes.

So what can a person build out of these?

The batteries are for the most part dead but the remainder of the
components seem to be in good condition.

Any suggestions?

Thanks

TMT

Sure! I have a few of them. I usually get them for free because they
are "broken". I replace the batteries and they are as good as new. I
have even gotten a hold of an expensive "sine wave" UPS. Most UPSs
use a sum of square waves to simulate the 60Hz sine wave. There are
lots of transients and noise, however. Some (expensive) UPSs use a
different type of inverter and produce pure sine wave AC. If you put
an accessory plug in the side, you can use it to keep the batteries
topped off and plug into the accessory plug for volts. Be careful
though, the better ones use 2 12V batteries in series.

Russ

"Russ" wrote in message
...
Sure! I have a few of them. I usually get them for free because they
are "broken". I replace the batteries and they are as good as new. I
have even gotten a hold of an expensive "sine wave" UPS. Most UPSs
use a sum of square waves to simulate the 60Hz sine wave. There are
lots of transients and noise, however. Some (expensive) UPSs use a
different type of inverter and produce pure sine wave AC. If you put
an accessory plug in the side, you can use it to keep the batteries
topped off and plug into the accessory plug for volts. Be careful
though, the better ones use 2 12V batteries in series.

You need to be very careful with this - I have seen units that have one side
of line voltage on the battery terminals. This is not a problem with the
batteries sealed in the UPS, but could be a big problem if you try to bring
leads out to charge a battery.

I have about 25 UPS' I picked up at a local university sale for $30 total. The
largest was a 2KW unit with 18 12V batteries, one of which was dead :-).
Metalworking content - after replacing the one bad battery I tested it using my
bandsaw....

- Bob Headrick

I have about 25 UPS' I picked up at a local university sale for $30 total.
The
largest was a 2KW unit with 18 12V batteries, one of which was dead :-).
Metalworking content - after replacing the one bad battery I tested it
using my bandsaw....
- Bob Headrick
==========================
Bob , Interesting info ; can you confirm that the 18 pcs 12V battery were
in fact 9 strings of 2 batts in series (each string having a fuse )
providing 24 V ? or were all the 18 batts in parallel ?

Frank GMØCSZ / KN6WH

"Highland Ham" wrote in message
...

Bob , Interesting info ; can you confirm that the 18 pcs 12V battery were
in fact 9 strings of 2 batts in series (each string having a fuse )
providing 24 V ? or were all the 18 batts in parallel ?

Actually they were all in series, making it a bit nerve-wracking to replace a
battery in the string.

- Bob W7OV

18 x 12v = 216v with plenty current...since you are with us I assume
everything went well? ;)

TMT

On Tue, 22 Nov 2005 12:55:29 -0800, "Bob Headrick"
wrote:


"Highland Ham" wrote in message
.. .

Bob , Interesting info ; can you confirm that the 18 pcs 12V battery were
in fact 9 strings of 2 batts in series (each string having a fuse )
providing 24 V ? or were all the 18 batts in parallel ?

Actually they were all in series, making it a bit nerve-wracking to replace a
battery in the string.

- Bob W7OV

216 volt battery pack??? I don't think so.

Good point bob,

my liebert unit is full sine wave, from a supermarket
pos system, just replaced all three 12v batteries
with new ones, they are in series, 36 vdc.

My work ups, exide 12kva unit used 60 batteries,
three phased in series 240vdc

dude.

Bob Headrick wrote:

"Highland Ham" wrote in message
...

Bob , Interesting info ; can you confirm that the 18 pcs 12V battery were
in fact 9 strings of 2 batts in series (each string having a fuse )
providing 24 V ? or were all the 18 batts in parallel ?

Actually they were all in series, making it a bit nerve-wracking to replace a
battery in the string.

- Bob W7OV