Re: Noob Battery Pack questions...


"Tank 'm o'Niel" <tanky@xxxxxxxxxxxx> wrote in message
news:479c9ee1$0$30022$4c368faf@xxxxxxxxxxxxxxxxx
Hi - forgive me I'm a mechnical guy with limited electrical knowledge.: )

I noticed cell phone batteries have small circuit boards at the end of the
pack. What is the purpose of the board?

I am being tasked with a project using arrays of larger lithium cells - I
think there are 12 per pack. Each array comes with a circuit board at the
end as well. I noticed on the circuit board there looks to be a small
buzzer or something? Am I correct in seeing that?

If I wish to disassemble the packs to make larger arrays - could I have a
circuit board built to handle the larger array? Or is it more
advantageous to have a bunch of smaller arrays/packs than one large one?

Lastly, are battery packs assembled in series or parrallel and what is the
thining behind one over the other?

Any help appreciated -

Li-Ion packs have a charge regulator / protection circuit built in.
If you don't know about this cell chemistry I suggest that you educate
yourself before messing with them.

Tom



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