Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

   Home   Help Search  
Pages: Prev 1 [2]   Go Down
  Print  
Author Topic: Trouble finding exact Battery Replacement Kenwood TS-950SD S/N 1010625 CR2430  (Read 14653 times)
AC5UP
Member

Posts: 3956




Ignore
« Reply #15 on: April 21, 2013, 05:10:59 PM »

It's know solder, not no solder.........................    Grin
Logged

Never change a password on a Friday                
K0IC
Member

Posts: 18




Ignore
« Reply #16 on: May 05, 2013, 02:27:14 AM »

What is wrong with a battery holder inside or outside the radio?  I plan to do that with my TS-140S.  I have heard of other hams doing that.  I think it is too dangerous to solder to lithium batteries.
Logged
KE3WD
Member

Posts: 5689




Ignore
« Reply #17 on: May 05, 2013, 06:07:11 AM »

What is wrong with a battery holder inside or outside the radio?  I plan to do that with my TS-140S.  I have heard of other hams doing that.  I think it is too dangerous to solder to lithium batteries.

The battery holder method works fine for me, depending upon the customer's wishes. 

Good quality double-sided foam mounting tape can be used to affix the holder somewhere and does a good, quick job of it.  I like to also add a small bead of hot glue around the edges, if possible, for that extra bit of mounting confidence. 

73
Logged
KE3WD
Member

Posts: 5689




Ignore
« Reply #18 on: May 05, 2013, 06:12:59 AM »

If you have ever experienced an Li battery meltdown and fire situation, you likely would not ever try to solder to one again. 

The problem is that the Li technology cells can make their own oxygen once the catastrophic ppoint is reached via temp overheat and that results in an incredible fire that won't stay out once the extinguisher is deployed.  Looks like the fire is out -- and then it starts again. 

Yours truly once had an Li batt, larger than a coin cell, around the size of a C battery, start a fire that rather quickly burned a hole straight thru the masonite AND the steel sheet top of a testbench.  We rather hurriedly dragged the whole thing out of the highbay garage to the outside, where it just sat there and burned brightly until the cell was finished with its ugly demonstration. 

We had the good old Halon extinguishers there, too. 

But each time the extinguisher seemed to have put the fire out -- the darned thing would proceed to re-ignite. 

73
Logged
W9GB
Member

Posts: 2659




Ignore
« Reply #19 on: May 05, 2013, 12:28:38 PM »

Pure metallic Lithium is stored is mineral oil or other oil solution to prevent reaction (water in air/humidity).
I saw my first demonstration of a chunk of lithium (size of one Vegas dice cube) and Water in high school chemistry -- safety glasses were mandatory.  Typical of Clark's experience, explodes into flame.  It is an Exothermic reaction, so the heat released often ignites the hydrogen gas given off.

Lithium reacts intensely with water, forming lithium hydroxide and highly flammable hydrogen gas.
The colourless solution is highly alkalic. The exothermal reactions lasts longer than the reaction of sodium and water, which is directly below lithium in the periodic chart.

2 Li(solid) + 2 H2O -> 2 LiOH (aq) + H2(gas)

At 750oC lithium reacts with hydrogen to lithium hydride (LiH). The white powder that forms releases hydrogen gas upon later reaction with water, in amounts of 2800 liter per kilogram hydride.
As such, lithium is always studied for its application as hydrogen storage.

Seawater contains approximately 0.17 ppm lithium. Rivers generally contain only 3 ppb, whereas mineral water contains 0.05-1 mg lithium per liter. Large amounts of lithium were found in holy water from Karlsbad, Marienbad and Vichy. In solution it is only found as Li+ (aq).

Read more: http://www.lenntech.com/periodic/water/lithium/lithium-and-water.htm#ixzz2SRrJhy4h
« Last Edit: May 05, 2013, 12:41:24 PM by W9GB » Logged
W8JX
Member

Posts: 6682




Ignore
« Reply #20 on: May 05, 2013, 03:00:51 PM »

Chemistry/understanding reactions is neat. Even simple finely ground aluminum and iron oxide which are normally considered harmless alone and yet when mixed and a proper ignition source is provided it burns with a such ferocity (over 6000 degrees) that it will melt through any known metal when burning. 
Logged

--------------------------------------
You can embrace new computer/tablet technology and change with it or cling to old fall far behind....
WI8P
Member

Posts: 268




Ignore
« Reply #21 on: May 06, 2013, 07:52:54 AM »

While the discussion on soldering lithium batteries has been interesting, did anyone notice the OP never came back to reply?  I wonder if he ever found what he was looking for.   Huh
Logged
N4ATS
Member

Posts: 851




Ignore
« Reply #22 on: May 06, 2013, 02:10:17 PM »

Probably not since the thread was so derailed, common problem
Logged
Pages: Prev 1 [2]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!