>> Just 'cause it's 3.6v.... don't mean it has-to-be Ni-Cad.
>
>> The TL-5135 and TL-5186 are both 3.6v "lithium wafer cells".
>> http://baber.com/baber/products/computer_clock_batteries.htm
>
>Yes, we sure do. I'll have to check out the URL. I have always had
>the understanding that it is an "immutable physical property" of a true
>lithium cell to characteristically have 3 volts. Perhaps the "lithium
>wafer cells" you speak of are not "true" lithium cells. I will check
>out the URLs now.
>
My understanding of batteries is that the two chemicals are involved in an
oxydation/reduction reaction (in other words, they exchange electrons, so
one chemical is oxydised and the other one reduced. The electrons they
exchange make a current). The voltage of the battery is a characteristic
of the chemical reaction, so it just depends on which two chemicals are in
the battery. The rechargeable Nickel-Cadmium battery in front of me looks
like an AA battery, but it has a voltage of 1.2Volts, a characteristic of
all NiCad batteries. The three small Ni-Cad that power a computer's CMOS
add up to 1.2V*3 = 3.6V.
So other chemicals could make 3.6V batteries - you just have to find an
ox-red chemical couple that would produce an appropriate voltage. But if
the "lithium cells" and "lithium wafer cells" produce a different voltage,
then they rely on a different oxred couple. What's the other chemical in
these two batteries?
Charles
