Sean Breheny wrote:
> Hi Hasan,
>
> I'm not sure I understand - when you say "discharged to about 80% of
> full charge" do you mean
> discharged from 100% (fully charged) to 80%, or do you mean from 100%
> to 20%? For example, on a 10 amp-hour battery,
> do you mean you are going to discharge out 8 amp-hours or 2 amp-hours?
>
>   
Unfortunately I meant the later.
> would last almost two years. If you mean discharged 80% depth of
> discharge (100% to 20% state of charge) then no, they would not last
> very long at all.
>   
That's what I wanted to make certain.  Then I am screwed.
> Maybe you explained this already and I missed it but why are you going
> to have such discharges on your UPS twice per week?
>
>   
Thant's a long story.  In short, I am on sabbatical for a couple of 
years in Pakistan before I return to the US.   Electricity disappears 
for a 2-4 hours daily.  Its called 'load shedding' here.  There just 
isn't enough power available for everyone 24 hrs a day.  I bought this 
UPS so when I am working on my computer with some other equipment 
(oscilloscope etc.) I want to get some work done.

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