[chbot] Rechargeable NiMHs, and small motors

[Richard Jones]

I still have a few NiMH and Li-ion cells going free details were in this
post which I have repeated below:
http://lists.ourshack.com/pipermail/chchrobotics/2008-November/000531.html

The Development Manager at Tait Electronics has generously donated a number
of sample Sanyo battery packs to our robotics group. The packs are spot
welded and taped but may be split to yield individual cells with care.
Email the list outlining your plan for the batteries and how many you would
like. I'll bring them along to the next meeting. Note that the lithium
cells require a current limited constant voltage charger (expect the cells
to catch fire or explode if mistreated). The first two packs have AA size
cells.

1. 7.2V 1P6S Ni-MH 2500mAh/cell  6HR-3U
http://sanyo.wslogic.com/pdf/pdfs/HR-3UR.pdf
2. 7.4V 3P2S Lion   720mAh/cell  2UR14500P.3.TE
http://sanyo.wslogic.com/pdf/pdfs/UR14500P.pdf
3. 7.4V 1P2S Lion  1700mAh/cell  2UF103450PP.TE1
http://sanyo.wslogic.com/pdf/pdfs/UF103450P.pdf

Richard Jones

On Mon, 04 May 2009 14:20:09 +1200, Morris <skibear at gmail.com> wrote:
> I have just been to Molten media http://www.molten.org.nz/ who reprocess
> second hand computer parts, and electronic scrap. Good place to pick up
> some things - they are on Wordsworth Street, just near junction with
> Waltham Road.
> 
> They have 6x AA NiMH batteries for $1 if you buy them still glued inside
> the Tait battery packs (never used) although you would need to break the
> pack open yourself to get them (ask which battery pack - there is more
> than one kind - They have big boxes of them so if you want quite a few
> it would be a good way to get them). They also have them loose - 6
> 1500mAh NiMH batteries for $3.
> 
> Old printers & CD-ROM drives for small motors and stepper motors. You
> can pay scrap prices, but you need to buy 5 to ten of them and you would
> pay $5 more or less for the lot (depending on what you are getting). If
> you want to do this, know what you want beforehand as you need to talk
> to the manager and he doesn't want to piss around.
> 
> They have some 7.2V NiCad battery packs for cheap - not new but look
> decent.
> 
> Be aware that generally I think that what they have in their shop is
> overpriced.