[pct-l] Solar chargers or Battery transfer device?

[nathan burgess]

Do a quick google search for battery junction. That is where I get my cr123
batteries for my tactical flashlights for about $1.20/each shipped. Those
batteries are at least $8-10 at convenience stores so they might have what
your looking for!
On Jan 20, 2011 10:29 PM, "Rick Wiggins" <moosewig at yahoo.com> wrote:
> Thanks Paul,
>
> I am leaning on the Igo side of the fence now.  I really don't want the
extra
> weight!
>
> My Droid X has an extended life battery with a capacity of 1900mah.
Sounds like
> 1-2 charges per pair of ultimate lithiums.  I still need to do some
testing on
> that.
>
> That makes sense about the 75-85% charge each time.
> I think I will try and find some bulk amounts of lithiums on ebay or
> something.   If I can stock up my resupply boxes rather than buy them in
towns
> it would be cheaper.  I love the Ultimate lithiums but are expensive in
the
> convenience stores.
>
> MeanderMoose
>
>
>
> ________________________________
> From: Paul Robison <paulrobisonhome at yahoo.com>
> To: Rick Wiggins <moosewig at yahoo.com>; pct-l at backcountry.net
> Sent: Thu, January 20, 2011 4:55:24 PM
> Subject: Re: [pct-l] Solar chargers or Battery transfer device?
>
>
> comes down to how long between your resupplies.
>
> the current solio charger only holds as much electricity as one lithium AA
and
> takes 8 hours to charge even in dessert sun.  (our solio holds 2250,   an
e^2
> lithium AA is 2975,  alkaline duracell procell is 2250)
>
> don't be concerned about the total batteries for five months,  think of
how many
> for 5 days.   one resupply ...
> ... the solar charger is a fixed weight ... with AA's you can take less on
a 3
> days stretch and more on a ten day stretch.
>
> we took a solar charger in 2010 and will not in 2011, we used the solio
"tough"
> one .  worked great but simply wasn't worth the weight.
>
>
> lastly,  lithium batteries weight 40% less than alkaline, and have 50%
more
> electricity as even the very best procell alkalines.  are also unnaffected
by
> any temps we would see.
>
> i don't know specifically how many Mah your droid battery takes or at what

> voltage so i can't help knowing how many e^2's it takes to charge the
thing
> fully once...   but do know,  it takes half a batteries power to charge
the last
> 20% ...   so, when using the igo,  charge to 75 or 85 %,   use,  then
charge
> again with the same batteries, and you will get more juice out of them,
this is
> due ot the increased capacitance of the charged ions in your droidX
battery...
> eventually because no matter how many MaH are available, they are only 1.5
to 3
> volts,   they will be unable to push power into the battery as
efficiently.
>
>
> our cell phone takes a 4.2V 950 MaH battery,  so 1900 MaH at e^2'd voltage
...
> meaning 2 AA's will charge our cell phone fully three times.
>
> the iphone gets a charge and a half off 2 AA's if they are top quality
lithium.
>
>
> hope this helps,
> ~Outpost.
>
>
>
>
> ________________________________
> From: Rick Wiggins <moosewig at yahoo.com>
> To: pct-l at backcountry.net
> Sent: Thu, January 20, 2011 7:36:55 PM
> Subject: Re: [pct-l] Solar chargers or Battery transfer device?
>
> I am having a hard time deciding between a solar charger like the Solio
Rocsta
> or the PowerMonkey Explorer.  The other option is the Igo AA battery
transfer
> device I have.  Obviously the light option!   They all would charge my
Droid X.
> I am concerned about the amount of batteries I would need for the Igo over
the
> whole trail.  The Droid X is the only device I would need to charge
though!
>
> Any thought on this would be appreciated
>
> MeanderMoose
>
>
>
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