[Voyage-linux] Battery Backup for ALIX and other embedded boards

[Jordi Ferrer Plana]

We have developed a NiHM 9V Battery Backup for ALIX boards for our usage.
Now, we are planning to commercialize it if there is demand enough. I attach
a small description for your information.


* Meftah Tayeb (tayeb.dotnet at gmail.com) wrote:
> +1.
> would definitly buy at least 100 if they are stable and strong enough.
> specification?
> 
> ----- Original Message ----- 
> From: <jfh at greenhousepc.com>
> To: <voyage-linux at voyage.hk>
> Sent: Monday, March 26, 2012 1:30 AM
> Subject: [Voyage-linux] Battery Backup for ALIX and other embedded boards
> 
> 
> Greets,
> 
> 
> Not sure what the policy is on doing what I'm getting ready to do, but I 
> figure I'll be told I made a mistake, or I'll get a mailbox filled with 
> orders.
> 
> 
> My company (I own it, I don't just work here ;) ) designs and manufactures a 
> number of products, mostly geared towards the solar energy business.  I'm 
> about to release a new product -- a zener-diode based trickle charger for 
> NiMH batteries.  It's not rocket science or anything, but when I tested it 
> on an ALIX.3D2, I got two hours of run time from a pack of 8 AA NiMH 
> batteries.  The design is fool-proof and I selected the charging voltage I 
> did to give the batteries the longest operating life possible.  I'm going to 
> do more tests, etc, and things may change.
> 
> 
> 
> Right now I don't have a price, but that's part of why I'm posting here.  In 
> the quantities I can sell to my customers, my costs are not all that low --  
> I'm looking at something in the $30 to $35 range.  Which is a bit spendy. 
> But if I can get that mailbox full of orders, I can probably cut my costs in 
> half, which means I can cut my price in half.  The part is 32mm wide by 65mm 
> high and is designed to mount on DIN rail, with two 4mm (or so) holes spaced 
> 25mm apart for Phoenix Contacts DIN rail clips (not included, but I buy them 
> in bulk, so I could if there is demand).  There are three screw terminals --  
> one for "in", two for "out".  The board has a 750ma polyfuse to protect from 
> short circuits, because the batteries =will= make more than 750ma if 
> shorted.
> 
> 
> Batteries are not included -- mailing batteries runs into all sorts of 
> rules, so the board has a standard 9 volt battery clip.  The recommendation 
> is to use an 8 pack of 2500mAh NiMH batteries.  If there is interest, I'll 
> change the zener diode and current limiting resistor to support 7-cell 9v 
> NiMH batteries.  They aren't good for long-term backup, but can survive a 
> few minute power outage.
> 
> 
> 
> One of the regulars here asked about them, and I'm hoping to sample him one. 
> I have half a dozen boards sitting around and will sample one to a limited 
> number of people who can convince me they'd be willing and able to order 
> them in quantity 25 and above.
> 
> 
> Thoughts?  Orders?  Feedback?  Slap on the wrist?
> 
> --
> Julie Haugh
> Senior Design Engineer
> greenHouse Computers, LLC // jfh at greenhousepc.com // greenHousePC on 
> Skype
> 
> 
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-------------------------------------------------------------------------------
Jordi Ferrer Plana

Computer Vision and Robotics Group
University of Girona (SPAIN)
Dept. of Electronics, Informatics and Automation
Tel. +34 972 419 812  -  Fax. +34 972 418 259
     +34 972 418 882
web: http://eia.udg.edu/~jferrerp          -  E-mail: jferrerp at eia.udg.edu
     http://llamatron.homelinux.net        -          netfox at llamatron.homelinux.net

"Beware of bugs in the above code; I have only proved it correct, not tried it."                                                                                                                              
   - Donald E. Knuth -
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