Car battery in UPS?

[notme]

Observing proper safety (ie, not using it inside the home), is there any
reason using a car-sized 12v gel-cell (eg, Optima*) would be a Bad Idea (tm)?

Form-factor is not an issue; the battery would be outboard, of course.

Charging time would be much longer considering the modest charge current of
the UPS, but so would be the discharge time.

Opinions?

Thanks.

*<http://optimabatteries.com/optima_products/yellowtop/index.php>

 

[Sylvia Else]

Observing proper safety (ie, not using it inside the home), is there any
reason using a car-sized 12v gel-cell (eg, Optima*) would be a Bad Idea (tm)?

Form-factor is not an issue; the battery would be outboard, of course.

Charging time would be much longer considering the modest charge current of
the UPS, but so would be the discharge time.

Opinions?

Thanks.

*<http://optimabatteries.com/optima_products/yellowtop/index.php>

Are you sure the available charge current will exceed the self-discharge
of the battery?

Sylvia.

 

[Nico Coesel]

Observing proper safety (ie, not using it inside the home), is there any
reason using a car-sized 12v gel-cell (eg, Optima*) would be a Bad Idea (tm)?

Form-factor is not an issue; the battery would be outboard, of course.

Charging time would be much longer considering the modest charge current of
the UPS, but so would be the discharge time.

Opinions?

You should use a sealed battery. Car batteries may leak accid and H2
gas. Most UPS I've seen have a fuse in series with the battery. Make
sure to retain the fuse. I'm not worried about the charge current. An
UPS is usually fully recharged in a couple of hours.

 

[PeterD]

Observing proper safety (ie, not using it inside the home), is there any
reason using a car-sized 12v gel-cell (eg, Optima*) would be a Bad Idea (tm)?

Form-factor is not an issue; the battery would be outboard, of course.

Charging time would be much longer considering the modest charge current of
the UPS, but so would be the discharge time.

Opinions?

Thanks.

*<http://optimabatteries.com/optima_products/yellowtop/index.php>

Any deep-cycle LA battery would work.

 

[Martin Riddle]

Observing proper safety (ie, not using it inside the home), is there
any
reason using a car-sized 12v gel-cell (eg, Optima*) would be a Bad
Idea (tm)?

Form-factor is not an issue; the battery would be outboard, of course.

Charging time would be much longer considering the modest charge
current of
the UPS, but so would be the discharge time.

Opinions?

Thanks.

Should work with out a problem, except for charging.
IF you want an indoor friendly battery look at the AGM, they don’t gas
like LA's.

Cheers

 

[Andrew]

Should work with out a problem, except for charging.
IF you want an indoor friendly battery look at the AGM, they don't gas
like LA's.

Typical car battery is "start" battery and is not designed to withstand
significant discharge.
For UPS use one needs "Deep cycle" battery.

http://www.windsun.com/Batteries/Battery_FAQ.htm#Starting, Marine, and Deep-Cycle Batteries

 

[notme]

http://www.windsun.com/Batteries/Battery_FAQ.htm#Starting, Marine, and D

eep-Cycle%20Batteries

That's a *great* primer on LA batteries of all types (liquid, gel, AGM,
deep-cycle); there's not a type that's not described.

"Myth: The old myth about not storing batteries on concrete floors is just
that - a myth. This story has been around for 100 years, and originated back
when battery cases were made up of wood and asphalt. The acid would leak from
them, and form a slow-discharging circuit through the now acid-soaked and
conductive floor."

Thanks!

 

[Martin Riddle]

That's a *great* primer on LA batteries of all types (liquid, gel,
AGM,
deep-cycle); there's not a type that's not described.

"Myth: The old myth about not storing batteries on concrete floors is
just
that - a myth. This story has been around for 100 years, and
originated back
when battery cases were made up of wood and asphalt. The acid would
leak from
them, and form a slow-discharging circuit through the now acid-soaked
and
conductive floor."

Thanks!

Heres the real Battery FAQ <http://www.batteryfaq.org/>


Cheers

 

[Rich Grise]

Observing proper safety (ie, not using it inside the home), is there any
reason using a car-sized 12v gel-cell (eg, Optima*) would be a Bad Idea (tm)?

Form-factor is not an issue; the battery would be outboard, of course.

Charging time would be much longer considering the modest charge current of
the UPS, but so would be the discharge time.

You say, "Car-sized"; but you haven't said if it's a car battery or a
deep-cycle (RV, Marine, golf cart).

Don't use a car battery. They're good for 600 cold cranking amps, but
crap for deep-cycle applications.

If it is, in fact, a deep-cycle battery, then there should be no problem,
as long as your UPS can keep it charged, as has been mentioned.

Good Luck!
Rich