thanks silverfox.. iv been browsing a couple of months already but its only this time that i noticed something that i couldnt seem to explain. hehe
im using some generic 3.7v 1000mah batteries that i got off ebay. i think these are the unprotected ones. I've charged them both up a second time and switched their places and still the one nearer to the led got drained first.
is it only me that is experiencing this?
no its not just you, i have observed this phenomena in many series battery situations, and have not yet figured out a logical reason for the occurance.
mabey its that there is more heat by the head, or mabey it is more complex thing having to do with flow of the electricity.
the real question is if the same thing occurs when there is zero heat differentials, and the connections are all solid as a rock.
In 4x and 2x series electronic tech gadgets i do NOT observe a + connected battery going down early YET.
so it must have more to do with a heat diffferential, heat from the head is changing how the chemistry in the first battery reacts.
did you know, that on LED gates in series there is also an observance that the first ones (or is it last ones
trigger the gates differently. i am seeing this more in mega multi seires led setups, certain gates have a tendancy to trigger before others, but there is also a polarity pattern.
(of course the stuff about overdraining your li-ion to .8 is more of an issue as discussed, but that has been mentioned).
ya know , there are led lights that are wired in reverse (batteries go in reverse on PURPOSE), AND most incadescents can operate in similarity if all the batteries are reversed. items like that would show that its a heat differance not a electrical properties differance.
or a person could just increase the heat 3*C and drain a set, but i think that has been done. manufactures charts will show a capacity differance And rate differance, in temperature differances, both higher and lower depending on the chemisty can change the total capacity that gets expended, or the rate it can be used.
because the batteries consumers use are "room temperature" type, any change from room temperatures would usually be less total.
a warm lithium battery might output stonger , depleating its capacity faster.
not only do you have the heat from the led, but there is also the heat losses from the connections (here and there) and the heat losses from the curcuits, and SOME curcuits are ON the battery top itself, transferring heat right into it.
