Vintage Simmons Drums (UK) Users Group

Michael 
I removed the battery by desoldering it.  It turned out to be two button 
batteries shrink wrapped and soldered together one on top of the other.  I assume 
the bottom flat part is the positive side and the bumpy other side is the 
negative.  (Let's hope so.  I've never seen ones quite like them - they are from 
Germany that is all I can read on them).  I am in the process of obtaining the 
NiCd 3.6 V as you said.  However, I don't know the term you used in your last 
E-mail  mignon.  The three battery replacment with large capacity sounds great 
so I belive I would like to do that.

Your information has been very helpful and I thank you very much.
Barry

PS as for the two battery trick from Berk !  Sounds like a good idea in the 
future but there was nothing to save right now,  all has been lost already.



In a message dated 8/20/2006 4:36:58 PM Eastern Daylight Time, 
michael.buchner@... writes: 
> Hi Barry,
> The batteries or their cases in different aeras of SDS7 had many shapes. 
> Your round cylinder IS the battery itself, not a case. The shrink wrap is for 
> preventing shortcuts.
> You don't need to unwrap anything, desolder and remove it complete. 
> Sometimes the battery is fixed to the board with doublesided tape or glue, so you 
> might need some force. It doesn't matter if your new battery has another shape 
> as the original, only voltage and polarity is important. I like to replace the 
> batteries with 3 x 1.2V mignon size wired serial, because they are cheap and 
> have a big capacity (if the owner wants to switch off his SDS7 for another 
> 20 years...).
> So: Good luck!
> Michael  


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