[TenTec] Lithium Battery

[Geoffrey S. Mendelson]

On 8/22/12 9:36 PM, Mike Hyder -N4NT- wrote:
> See if this helps:
> http://www.repeater-builder.com/radio-shack/replacing-the-rs-htx-202-internal-battery.pdf

It's really easy. I've done it several times in both the HTX-202's I had 
over the years until I finally gave up due to the price of the nicads. I 
replaced them with other radios with cheaper batteries.

To do it you need a set of phillps screwdrivers, a lithium coin cell 
with wire leads, fully insulated and the usual cutting and soldering 
tools. You will also need a small piece of thin double sided tape (not 
the foam kind).

Make sure to take pictures, and to cut the leads at the battery instead 
of unsoldering them. There's plenty of room for a 2032 cell, the wires 
and so on.

I made the battery by taking a 2032 cell, and carefully soldering wires 
to it using "silver bearing solder". The trick is to get a puddle to 
stick without overheating the battery, let it cool, and then heat the 
puddle and stick the wire in it. After it completely cooled, I checked 
for heat damage and then covered it with one layer all around of 
electrical tape.

If you can get a replacement battery with the leads welded on and 
insulated, you are far ahead of the game, but I was not able to.

73,

Geoff.


-- 
Geoffrey S. Mendelson,  N3OWJ/4X1GM/KBUH7245/KBUW5379