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Re: Battery Power Question...

>>>>> "Cowgirl" == Cowgirl the MindWalker <> writes:

Cowgirl> Hi... my current system running off of a heavy lead NiCad 12V
Cowgirl> battery...

Do you mean lead-gel?

What does that battery say on it about watts or amp hours?  The "12v"
is only 1/2 the story.  To put together an equivalent battery we need
to know the other numbers on the battery you now use that gives you 2
hours.

Cowgirl> ...anyone had any suggestions on a small light replacement.  I
Cowgirl> was going to use one or two Sony NP-F750s but I'm a software
Cowgirl> person and volts and watts are confusing to me. The power
Cowgirl> requirments for the Parvus Power I is 7.5-17V input. 

I use 2 NP-F950s wired so that the "+" of one goes to the "-" of the
other, then using the remaing "-" and "+" (one from each battery)
go to the system.  This is called "series" and gives you a voltage of
14.5V to 16.5V which sounds like it is fine for your board.  You might
want to consider adding a diode to protect aganst reversing the
polarity (pluging it in backwards) which has the added benifit (in
this case) of droping the voltage a bit, so you are not getting quite
so close to the 17v that your board wants as a max.  Many of us use an
arrangement like this that also allows you to plug in more than one
power source at the same time without the power sources hurting each
other.  THis way you can plug in a fresh battery or an alternate power
source with out having to shut down.

Cowgirl> Parvus Scalable I
Cowgirl>   486 100mhz w/4mg
Cowgirl>   72meg DOC
Cowgirl> Parvus Power I
Cowgirl> Twiddler

Cowgirl> M1 - Powered by a NP-F750 Already.

I run a similar system, parvus scalable I, cell P166, M1, modified
BAT.  I get aprox. 9 hours from the 2 sonys.  If you would like to
talk about this more (we can get into specifics) feel free to write me
off the list.

Hope this helps,

Greg

--
 Greg Priest-Dorman
       NO SOLICITING

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