Peter Onion wrote:
>>>>> the battery pack is a battery holder and with my voltmeter I got
>>>>> 5.4 volts and i have 4 batteries rated at 2000 mah so 2000*4=8000
>>>>> or 8 ah
>>>>
>>>> oh no, series does not multiply current, just voltage...
>>>
>>> Capacity not current !
>>
>> No, that's basically what the OP thought.  Capacity is usually
>> measured in Amp-hours, and it does NOT multiply with the number of
>> batteries connected in series.  The voltage and the total energy
>> storage do, however.
>
> No Olin....   Go back and read the thread again.
>
> In the post I was replying to the quoted text was talking about mah
> and the reply mentioned current...  That was mixed up.

No, you said "capacity", which is generally taken to mean some current times
time rating, like Ah or mAh.  If you had said "energy storage" you would
have been right.  Putting batteries in series increases neither the current
nor the capacity.

Take 4 cells each with a rated capacity of 2Ah and a nominal 1.5V output.
Put them together in series and you get a combined battery that would still
be rated at 2Ah, but at 6V.  Put them in parallel and the rating would be
8Ah at 1.5V.  However, in either case the total energy storage is
proportional to the number of cells in the battery pack.


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