RESPONSE TO kERRY ON BATTERY HOLDERS
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Posts: 46,084
Dear Kerry,
Try a company called memory protection devices in Farmingdale, N.Y,
www.batteryholders.com. I use them for all my Military battery projects and
they are great. If you only need one holder, (secret) ask for a sample.
For the batteries, I am using Li-ion Polymer batteries which I recommend for
long hauls. All my GPS devices are being powered for days on these
batteries with RF devices attached. They come in many sizes and shapes. I
have a cylinder type 17 mm dia x 56 mm long which gives me 3.7 v at 2000
mAh. They can be charged with a single chip from TI, the BQ24001 or 2 or 3
PWP from Digikey. the single chip will charge up to 2 Li-ion batteries as
fast as three hours. The -2 or -3 is the number of LEDs available from the
chip for charging status. the spec sheets tell the story. the eval kits
are also avail from Digikey and are great fro first timers. If you need
some Li-ion batteries I have a dist in cal that brings them in from Korea
and China where they are made. if you e-mail me directly, I will give you
his number. I don't think he would like the e-group exposure. Hope this
helps.
mike m
memelectronics@e...
[noparse][[/noparse]Non-text portions of this message have been removed]
Try a company called memory protection devices in Farmingdale, N.Y,
www.batteryholders.com. I use them for all my Military battery projects and
they are great. If you only need one holder, (secret) ask for a sample.
For the batteries, I am using Li-ion Polymer batteries which I recommend for
long hauls. All my GPS devices are being powered for days on these
batteries with RF devices attached. They come in many sizes and shapes. I
have a cylinder type 17 mm dia x 56 mm long which gives me 3.7 v at 2000
mAh. They can be charged with a single chip from TI, the BQ24001 or 2 or 3
PWP from Digikey. the single chip will charge up to 2 Li-ion batteries as
fast as three hours. The -2 or -3 is the number of LEDs available from the
chip for charging status. the spec sheets tell the story. the eval kits
are also avail from Digikey and are great fro first timers. If you need
some Li-ion batteries I have a dist in cal that brings them in from Korea
and China where they are made. if you e-mail me directly, I will give you
his number. I don't think he would like the e-group exposure. Hope this
helps.
mike m
memelectronics@e...
[noparse][[/noparse]Non-text portions of this message have been removed]
Comments
situation however. I have a radio controled desktop rover I bought. It uses
CR123 lithium Cells. I use 2 and they last 3 hrs. Needless to say at $12 for
a pair of batteries this is unacceptable. I searched digikey and found no
rechargable Lithium batteries in a cr123 format. I found out these are
17x34.5 in size 3V.
Do you have any ideas what I could do?
Thank you very much for your time.
At 06:50 PM 8/9/02 -0400, you wrote:
>Dear Kerry,
> Try a company called memory protection devices in Farmingdale, N.Y,
>www.batteryholders.com. I use them for all my Military battery projects and
>they are great. If you only need one holder, (secret) ask for a sample.
>For the batteries, I am using Li-ion Polymer batteries which I recommend for
>long hauls. All my GPS devices are being powered for days on these
>batteries with RF devices attached. They come in many sizes and shapes. I
>have a cylinder type 17 mm dia x 56 mm long which gives me 3.7 v at 2000
>mAh. They can be charged with a single chip from TI, the BQ24001 or 2 or 3
>PWP from Digikey. the single chip will charge up to 2 Li-ion batteries as
>fast as three hours. The -2 or -3 is the number of LEDs available from the
>chip for charging status. the spec sheets tell the story. the eval kits
>are also avail from Digikey and are great fro first timers. If you need
>some Li-ion batteries I have a dist in cal that brings them in from Korea
>and China where they are made. if you e-mail me directly, I will give you
>his number. I don't think he would like the e-group exposure. Hope this
>helps.
>mike m
>memelectronics@e...
>
>
>
>[noparse][[/noparse]Non-text portions of this message have been removed]
>
>
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Very respectfully, your obedient servant.
Kerry
Admin@M...
WWW server hosting [url=Http://mntnweb.com]Http://mntnweb.com[/url]
Kerry Barlow
p.o. box 21
kirkwood ny
13795
607-775-1575
>Hello Mike: I think I solved my robot problem for now. I do have a new
>situation however. I have a radio controled desktop rover I bought. It uses
>CR123 lithium Cells. I use 2 and they last 3 hrs. Needless to say at $12 for
>a pair of batteries this is unacceptable. I searched digikey and found no
>rechargable Lithium batteries in a cr123 format. I found out these are
>17x34.5 in size 3V.
>Do you have any ideas what I could do?
>Thank you very much for your time.
Kerry -
Electronic Goldmine [noparse][[/noparse] http://www.goldmine-elec.com/ ] has a similar battery
on sale for $ 1.99US each. According to their Sale Flyer the difference
appears to be that the one they are offering has wire leads. If you can adapt
them for your rover, it seems like a worthwhile item. The Catalog Number is
R5019 and is described as 3 volts @ 1.3 AH .66 " diameter x 1.36 " length.
Hope that helps.
Regards,
Bruce Bates