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#625912 12/03/18 03:02 PM
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I am trying to replace the small 3 volt battery in very old ts22a handset. I found where someone had posted some info on this site but have not been able to find it. Any help would be greatly appreciated. Thanks

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James M Cowan #625913 12/03/18 04:19 PM
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Quite a bit of info actually. After removing the conformal coating usually by scraping, you can unsolder the old battery and solder in a new one. Some suggest using a socket and a regular coin cell, but unfortunately the pins of the socket won't line up with the holes in the board. So some modifications need to be made.

I've never gone the socket route. The battery lasts quite along time as long as you keep up the main 9V battery. And if it does need replacement, the hard part is already done- removing the coating.

-Hal


CALIFORNIA PROPOSITION 65 WARNING: Some comments made by me are known to the State of California to cause irreversible brain damage and serious mental disorders leading to confinement.
James M Cowan #625917 12/03/18 06:02 PM
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Is the original battery soldered on both top and bottom?

James M Cowan #625923 12/03/18 07:32 PM
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I believe the board is through-hole plated so yes. Not a problem if you know how to de-solder. You need Solder-Wick and a solder-sucker is nice too. When you get done you should have clean holes which the leads on the new component go right into ready to be soldered.

-Hal


CALIFORNIA PROPOSITION 65 WARNING: Some comments made by me are known to the State of California to cause irreversible brain damage and serious mental disorders leading to confinement.
James M Cowan #625925 12/03/18 09:17 PM
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So if I understand you the new battery will have the leads already on it?

James M Cowan #625942 12/04/18 01:29 AM
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Yes. If you look at the number on the original battery and order the same that's what you will get.

-Hal


CALIFORNIA PROPOSITION 65 WARNING: Some comments made by me are known to the State of California to cause irreversible brain damage and serious mental disorders leading to confinement.
James M Cowan #625996 12/05/18 07:37 PM
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Not sure if this make a difference but this one has two cells that are connected together with a small metal strip.

James M Cowan #626002 12/05/18 10:13 PM
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On top of each other?

-Hal


CALIFORNIA PROPOSITION 65 WARNING: Some comments made by me are known to the State of California to cause irreversible brain damage and serious mental disorders leading to confinement.
James M Cowan #626019 12/06/18 05:56 PM
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Yes. They are connected with a small strip of metal bent in a s shape which attaches them together. Looks like + to -.

James M Cowan #626036 12/07/18 06:05 AM
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I have not seen that. Question is- is it two batteries with the "S" clip removable or is it a complete factory assembly of the two batteries. Do you have the number off the top battery? Like CR- something?

-Hal


CALIFORNIA PROPOSITION 65 WARNING: Some comments made by me are known to the State of California to cause irreversible brain damage and serious mental disorders leading to confinement.
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