In article <6ua2b4$86a$1@bunyip.cc.uq.edu.au>,
Guillermo Dubrovsky <s335984@student.uq.edu.au> wrote:
>hurley bryan (bhurle1@umbc.edu) wrote:
>: everyone seems to be worrying about the battery life of one single battery
>: or battery pack of many large batteries. Has anyone built a manual or
>: autoswitching pack to go between many batteries as need arises, to go all
>: day?
>
>why do you need to switch? why not wire them up all in parallel? (This is
>not a rhetoric question, if this works or doesn't for some reason, i'd be
>interested n knowing)
Don't know the details w/respect to the kinda equipment being discussed,
however I can think of some reasons just on the basis of physics.
Batteries of x volts in parallel _will_ indeed produce x volts. However,
I believe that the current will increase w/ the number of batteries in
parallel. ie, an x volt battery might push y amps. 5 x volt batteries in
parallel would then, if I'm not mistaken, try to push 5y amps through the
device. P = I^2 R means lots of power and lots of heat. That can be
a problem. I don't _think_ I've made any mistakes in that, but it's
possible.
>chau
>AlejandroDubrovsky
>
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gt4551d@prism.gatech.edu |\/|_) bathe your soul..."
| |-\ -Me'Shell N'degéOcello
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