Hi Bernhard,

 

I’d love to hear your feedback when you’ve had a chance to use them.

 

Thanks,

 

Ben

 

 

 

From: Bernhard Wörndl-Aichriedler [mailto:bwa@xdevelop.at]
Sent: 04 May 2010 18:39
To: General mailing list for gumstix users.
Subject: Re: [Gumstix-users] Li-ion Battery Supply

 

Hey =)

I ordered 3 of this packs a week ago so they should arrive soon then i'll send you a test report.

I already used my chestnut with the little brother of this battery, the 1200mAh version and
the problem I faced, was that the voltage broke down to quickly (meaning 10 to 15 minutes of operation).
I think that might be a problem with that packs too, so i prefer two cell batteries- if you use non-USB daughterboards like the summit.

Regards

Bernhard Wörndl-Aichriedler


Am 04.05.2010 19:30, schrieb Victhor:

I also have powered my Overo Fire/Palo43/LG 4.3" panel with a Nokia
battery, works well, although I don't know how to get battery
information out of the pin on the battery. If it's 1-wire, well, I've
never been able to get 1-wire working as the driver is for OMAP2.
BTW I also think of adding this battery to my system later, I saw it a
while ago and I liked its price and size :)
  
Hi Ben - 
 
 
I have not done exhaustive testing, but after the responses I got to
my battery questions, I grabbed a 3.7V LiPo battery from a broken
Nokia cellphone and attached it to my circuit - it has been working
very well for repeated re-boots and staying on for fairly long periods
of time.  I even power a few small MEMS sensors off of the expansion
board regulators, and these are on during boot, but do not cause a
current over-draw.  I am not aware of any reason why any LiPo battery
supplying 3.7V wouldn't do the trick.  And this one would certainly be
easier to attach to your circuit than my hacked together solution,
although you will probably have to purchase their recharger as well.
 
 
There is no problem with using more than 3.7V.  5.5V is the limit for
C43 on the current summit board (I haven't looked into other expansion
board designs, but I understand most are similar in this respect.)  If
you want to supply more than that, take a look at Bernhard's solution
of removing C43, although I chose not to try it myself.
 
 
http://old.nabble.com/9V-Battery-Supply-for-Overo-Air--Summit-Troubles-td28354506.html
 
 
Good luck!
-Kim
 
On Tue, May 4, 2010 at 12:19 PM, Ben McCarthy
<b.mccarthy@lancaster.ac.uk> wrote:
        Hi,
        
         
        
        I have seen the recent battery discussions on the list and
        wondered whether this Li-Ion pack would be suitable to power
        an Overo Air:
        
         
        
        http://www.sparkfun.com/commerce/product_info.php?products_id=8483
        
         
        
        I saw reference to the Overo requiring 3.7v and this pack
        provides 3.7v exactly. Is using something that supplies
        exactly 3.7v unadvisable, does the Overo ever temporarily
        require slightly more than 3.7v (say during boot)?
        
         
        
        Cheers,
        
         
        
        Ben 
        
        
        
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-- 
Kim Turley
kimberly.turley@gmail.com
 
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