AC Input to DC Chargers

[Brian Young]

I guess I am at four years on the battery, yikes where
does time go....

--- wgalligan <wgalligan at cnbcom.net> wrote:
> I'm in the car business so I think I can answer this
> one.  Unless you are charging several other peoples
> batteries off you car battery then it shouldnt go
> dead buy the end of the day.  How old is your car
> battery? Is it hot out during the day?  These are
> factors in your cars battery ability to charge your
> equipment tand then be able to get you home.  In hot
> climate like here in Texas the heat is extremely
> tough on car batteries.  It can cause sulfating of
> the battery.  Once this begins to happen the battery
> loses its ability to retian its charge and will not
> fully charge to its capacity. 
> So if your battery is about 3yrs old be suspect that
> it could be going bad.  Another thing that a lot of
> people dont realize is that the battery could be
> drying out.  Make sure your battery is full of fluid
> (distiled water only), this can also cause premature
> failure of your cars battery.  The most your taking
> out of your car battery charging your airplanes is
> probably less then 5 amps.(electric dudes correct me
> if I'm wrong)  Not enough to kill a good battery.
> Even if you are charging e-flight batteries.
> 
> OK... so much for shop 101.....
> 
> Wayne
> 
> > Yep, Im planning to do that. One of my chargers
> > specified a 13 amp supply to meet its max output
> > rating.
> > 
> > Another thing, Im finding that my car battery
> doesnt
> > have the duration it once did. I used to charge my
> RC
> > batteries at the field, but have been supprised
> > recently by a dead battery when Im trying to go
> home.
> > Has anyone put heavy duty batteries in your car to
> > compensate for this?
> > 
> > 
> > --- Bob Kane <getterflash at yahoo.com> wrote:
> > > 
> > > The 12 volt section of most PC power supplies
> don't
> > > come close to supplying 25 amps, so I would not
> feel
> > > bad about your purchase. I own a 15 amp supply
> and
> > > run multiple chargers at high charge rates
> > > simultaniously, something a pc power supply can
> not
> > > do.
> > >  Brian Young <b4598070 at yahoo.com> wrote:Reading
> all
> > > the response to this I wish I had asked
> > > the question a couple weeks ago. I picked up a
> 12VDC
> > > 25amp supply at radio shack, oh well, couldve
> done
> > > that PC power supply conversion and saved $60.
> > > 
> > > --- Ted Sander wrote:
> > > > 
> > > > 
> > > > Veering a little off thread about battery
> > > chargers,
> > > > has anyone adapted a PC
> > > > power supply to feed any of these chargers on
> the
> > > > bench? Any cautions to be
> > > > aware of? Seems like most chargers are made
> for
> > > 12V
> > > > input - great at the
> > > > field, not so handy on the bench unless you
> spring
> > > > for the high priced
> > > > add-on. Obviously, we're talkin' enough input
> > > > capacity for TX and RX
> > > > batteries here, not mega-cell electric flight.
> > > I've
> > > > got two or three old
> > > > dead PC's peeking out from under the
> > > workbench.....
> > > > Going further, any advice on converting these
> > > power
> > > > supplies to a reasonably
> > > > accurate variable output? My TX lets me
> calibrate
> > > > it's built in volt meter,
> > > > but you need stable, varying amounts of dc
> voltage
> > > > to do it. I'm tired of
> > > > driving across town to borrow my friends
> regulated
> > > > power supply, plus having
> > > > my own would come in handy for other projects.
> > > (But
> > > > not enough demand to
> > > > justify buying one). Any web resources about
> this?
> > > > 
> > > > =====================================
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> > > 
> > > 
> > > =====
> > > Brian Young
> > > Tulsa
> > > b4598070 at yahoo.com
> > > 918-745-6046h
> > > 918-838-0900w
> > > 
> > >
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> > > 
> > > Bob Kane
> > > getterflash at yahoo.com
> > > 
> > > 
> > > ---------------------------------
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> > 
> > =====
> > Brian Young
> > Tulsa
> > b4598070 at yahoo.com
> > 918-745-6046h
> > 918-838-0900w
> > 
> > __________________________________________________
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=====
Brian Young
Tulsa
b4598070 at yahoo.com
918-745-6046h
918-838-0900w

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