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   alt.electronics      Electronics design, repair, worship, etc      7,706 messages   

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   Message 6,937 of 7,706   
   Tough Guy no. 1265 to Ian Field   
   Re: Lithium battery capacities (18650).   
   01 Aug 15 21:00:02   
   
   From: no@spam.com   
      
   On Sun, 21 Dec 2014 18:26:06 -0000, Ian Field    
   wrote:   
      
   > Having discovered that recycling bins in various shops are a good source of   
   > lithium battery packs that can be put to various uses, I notice quite a   
   > spread in claimed Ah capacities on the information labels.   
   >   
   > The first aquisition was labelled "5.2Ah" - there weren't any parallel   
   > combinations as it contained an uneven number of cells.   
   >   
   > The next rescue was marked "4.2Ah", and contained 3 sets of parallel pairs -   
   > so I assume the individual cell capacity is 2.1Ah.   
   >   
   > The next was lowest yet at 2.0Ah.   
   >   
   > This seems to be quite a spread for apparently identical cells, so I'm   
   > wondering if I'm missing something?!   
   >   
   > Thanks for any help.   
      
   On a similar note, I bought some Lithium Ion AA batteries from China on Ebay.    
   They claim to be 2.5 amp hours.  Yet a 1 amp charger fills them in just over   
   an hour.  I suspect they lie about the capacity.   
      
   --   
   But she was always fat.  She was born an only twin.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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