Computer UPS Built On Automobile Battery?

 

The "UPS Design That Doesn't Overheat" got me going on something that's been in
the back of my mind for a couple of years:   Why not a PC UPS that uses a plain
old 12v automobile battery as it's storage medium?

Not pretty... but there's plenty room under my workstation table.

I'm just guessing, but I'd bet that Pep Boys would sell me more capacity and
longer life in a gas-less automotive battery for about half the price that APC
would charge me for a replacement battery.
--
PeteCresswell

 

wrote:


Wrong kind of battery; you need a deep cycle.  Only deep cycles that
are really suitable for inside use are agm, and they aren't cheap.

 

Per Chris Hill:

PeteCresswell

 

(PeteCresswell) wrote:

the internal components of a regular automotive batteries
are not designed to hold up to a significant (e.g.>33%)
electrical  discharge like a deep-cycle battery. A deep
cycle battery components has a greater ability to
recharge after being drained of a significant amount of
power. A regular automobile battery  is  less likely to
*recover* from a complete discarge - a better choice
for a UPS system would be electric golf cart batteries
(or batteries used by motorized wheel chairs ).

 



     You are preaching to the choir here, but let's think outside of the box for
a moment...

     It is rare for a UPS battery to get deeply discharged, most power failures
last for less than a minute or so.  When you think about it, a UPS battery is in
float service with occasional, fairly short but heavy discharges...just like a
car battery.  Also, you can buy two car batteries for what one good deep-cycle
battery costs, and they warranty car batteries...

Vaughn