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09-28-2006, 03:46 AM
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#1 | | linux addicted
Join Date: Sep 2006 Location: Hannover/ germany
Posts: 74
 | Battery Solution(s)
I will post here my 'successes' about a replacemant Battery
(without Photos so far, because my daughter dropped out DigiCam to death)
I just found a shop (in germany, where I live), which sell rather tiny lithium polymer accus. now I have my second watch with a 380mAh LiPoly Cell, which is slightly thicker tan the original one (adds 2mm, so you cant close the case, but would be possible with longer screws).
IMO two scenarios are possible:
-two 110mAh cells will fit without case modding ( I still belive this will last much longer, than the original one, because I still think all original batteries are damaged, because of non-usage till selling)
-two 110mAh and one 380mAh cells with a custom case (only the 'back-plate'), which makes it 2mm thicker (bulding the case-plate will most likely end up in a mold for it) | 
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09-28-2006, 04:02 AM
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#2 | | linux addicted
Join Date: Sep 2006 Location: Hannover/ germany
Posts: 74
| watch #2
replaced orig. battery with the 380mAh cell, case open
usage: try to emulate/duplicate my normal usage of wath #1
first 24h: no diffrence shown in mattery gauge (100%)
didn't minitored it very well, but lasts about 5,5 days with little use
Last edited by mclien : 10-05-2006 at 08:23 AM.
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09-28-2006, 04:04 AM
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#3 | | linux addicted
Join Date: Sep 2006 Location: Hannover/ germany
Posts: 74
| watch #3
I plan to replace the orig. watch with two 110mAh cells, to fit in original case.
(hope I'll get this working over the weekend)
EDIT1: will wait until new digicam arrives to make a better documentation.
Last edited by mclien : 10-06-2006 at 01:59 PM.
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10-01-2006, 12:09 PM
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#4 | | Registered User
Join Date: Oct 2006
Posts: 35
| Was looking to do something similar myself. Please keep me posted if it worked for you 
Also, are you still using PD3032 cells? Or are you using an equivalent?
Last edited by realyst : 10-01-2006 at 12:11 PM.
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10-01-2006, 12:49 PM
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#5 | | Registered User
Join Date: Oct 2006
Posts: 35
| Also, where do you buy these batteries? I can't seem to find anywhere on google actually selling the PD3032(they talk about it lots though)
I would be willing to buy one of the one of each type of cells off you if you're interested.
As for the backplate, I figure even a thin layer of rubber properly cut and slightly longer screws would do it.
Last edited by realyst : 10-01-2006 at 01:47 PM.
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10-05-2006, 08:31 AM
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#6 | | linux addicted
Join Date: Sep 2006 Location: Hannover/ germany
Posts: 74
| I think next try is to fit 2 of the 110mAh cells in the original case.
These are the cells I use: http://www.lipopower.de/shop/pages-...elzelle-7c.html http://www.lipopower.de/shop/pages-...lzelle-10c.html
Problem to fit a 110 and a 380 is that you have to hold them all sides, wich could be difficult with the rubber method, but nice low budget solution,though.
And I have NO idea at all which sort of thread the screws are (metric, inch, .., difficult to measure..)
sadly I have no camera (broken by my daugter) at the moment todocument the fitting of the 2 small cells :-(
the batteries itself arend that haevy and will fit in a envelope. Where are you (america, england...) costs : 110mAh: 3,30 EUR 380mAh: 3,80 EUR +H&S
Last edited by mclien : 10-05-2006 at 08:36 AM.
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10-05-2006, 09:43 AM
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#7 | | Registered User
Join Date: Oct 2006
Posts: 35
| very cool indeed.
I'll PM you my address to figure out shipping and pricing.
I'm actually in Canada myself, so the shipping shouldn't be that far different then USA.
Much appreciated. It's amazing how much trouble I had trying to find good batteries to play with. All the french and enlish sites I went to had batteries just a tad short of the PD3032's capacity.
Sorry to hear about your camera^^; Kid-grade electronics must need to follow standards above that of military-grade;P
I'll try a few things on my end once I get cracking and post any images I can. | |
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10-06-2006, 02:05 AM
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#8 | | linux addicted
Join Date: Sep 2006 Location: Hannover/ germany
Posts: 74
| I tried some things with the 2 small batteries:
I think its possible to fit them in the unmodified case, but this is still difficult an needs some good soldering skills. And I think i'll wait a bit (until I have a new camera) to dokument the thing. You have to bend and cut the soldering lugs in a accurate way and have to solder the second battery pickabach to the first one.
Or are you rather intrested in the extended version (100+380mAh) with the modified backplate.
Or do you just interested in the batteries themselfs, to find a own way?
S&H will be about 4-5 EUR to canada
Last edited by mclien : 10-06-2006 at 04:59 AM.
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10-06-2006, 09:36 AM
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#9 | | Registered User
Join Date: Oct 2006
Posts: 35
| I was just thinking of both the two low cap cells and the high cap cell to experiment with. But did you actually create a modded backplate? | |
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10-06-2006, 01:07 PM
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#10 | | linux addicted
Join Date: Sep 2006 Location: Hannover/ germany
Posts: 74
| I work on the modified backplane already (glued a2mm alloy piece to it and filled the rest with synthetic resin filling compound.
next is to shape it in the final form (and perhaps reinforce the screw lugs a bit) and after that I'll take a negative mold from that, and can from then on 'produce' several backplanes.
This will make a 380 and a110 mAh cell in it, so that we have 490mAh alltogether.
Theoretical every additional 2mm will then give us an additional 220mAh (2 110 cells).
But more than 4-5mm extra thickness and more than 710mAh don't make much sense for me... | |
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10-06-2006, 01:11 PM
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#11 | | Registered User
Join Date: Oct 2006
Posts: 35
| Wow. That sounds sorta cool:P
In that case, I'll wait a bit and become your first backplate+battery customer^^
If it won't work out, I'll just grab 2 110s and one 380 from ya and try tinkering around myself. I probably wouldn't be able to come up with anything quite as pro as that though.
feel free to email me at realyst [at] real-ism [dot] com | |
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10-06-2006, 01:51 PM
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#12 | | linux addicted
Join Date: Sep 2006 Location: Hannover/ germany
Posts: 74
| OK, I'll keep you informed. If you get to impatient while waiting, drop me a line (I have family and a job so it will take at least 'some' time).
But I self look forward to not have to charge my watch every day :-)
frank [at] mclien [dot] de
EDIT: just got a used camera via ebay (same model as before), so I'm fully operationally in the middel of next week, I hope.
EDIT: (31.10.06):
short status: Orignal Backplane is moded (with alloy pieces and epoxy glue) and shaped
I'm now waxing the original mold.
Last edited by mclien : 10-31-2006 at 08:19 AM.
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11-05-2006, 03:03 PM
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#13 | | Registered User
Join Date: Nov 2006
Posts: 2
| I just thought I would let you all know that I performed an upgrade that I found online at the following URL: http://hamdomain.com/wrist-pda/index.html
The upgrade went smoothly and my watch still functioned perfectly after finishing. I charged it overnight last night, and now I am logging how the new battery performs with "normal" use. Previous to this upgrade my watch was lasting approximately 24 hours with no use. | |
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11-05-2006, 03:12 PM
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#14 | | Registered User
Join Date: Oct 2006
Posts: 35
| that's pretty slick I like his piezo disc mod too.
mclien: you got any pics of your mold up? Yours would probably look prettier.
Last edited by realyst : 11-05-2006 at 03:54 PM.
Reason: spelling error
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11-13-2006, 07:55 AM
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#15 | | linux addicted
Join Date: Sep 2006 Location: Hannover/ germany
Posts: 74
| of course mine will look much prettier! 
Here is the status (bad weekend, but I'm not giving up):
First try of the negative mold was a bad one. Lots of bubbles/sinkholes/blowholes (don't know the exact term). So I made a second try with vacuum pump (to eextract the air out of the epoxy, without giving myself time to adapt new wax (hoping the leftover wax is good enought).
This nearly ruined everything! I now have a 'useable' negative mold and a somehow repairable original mold.
waxing will take me another week (from now on I'll not spare any wax layer...), so I'll possibly end up with the first useable backplane.
pictures: is there any space here on 1src for this? Otherwise I'll have to update my website (which will take more time).
EDIT: I see, I can attach pictures. (Any size limit?)
Will attach it tonight from home.
so long mclien
Last edited by mclien : 11-13-2006 at 07:58 AM.
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