Lithium battery capacities (18650).
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.
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But she was always fat. She was born an only twin.
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