Batteries

Is there anyone that have some experience on charging 2 lead batteries (12V)
in series ?
I do not mean the circuit, but if the batteries will be correctly charged or
will they have some long time problem ?

Enzo

 

Never answer a question with another question, but where
do you think that your 12 V batteries come from, and why, indeed,
are they called batteries instead of just cells?

Your 12 V batteries are made up of 6 2V cells in series.

Why should there then be a problem with 12 such cells
in series rather than with only 6?

(Not intended to be a scornful reply, sorry, can't be bothered
to recompose it)

 

I asume that you are doing this because you have a 24 volt charger which is
what you wuld need to do this with.

The lectrical system on my boat is amde up of two 6 volt batteries in series
to make a 12 volt bank and charge them with a 12 volt charging sustem and
they work fine that way.

 

To "Airy":
Yet another useless response from you.

To the op:
You have to be very careful when charging batteries in series. Basically you
must ensure they are as identical as possible, by identical I mean both the
model of the battery and it's "condition", if you try to charge two
batteries of the same model, one on it's last leg and one brand new you will
not get the result you want.

Frankly, unless you are sure they are the same batteries and in the same
condition I recommend either charging them seperatly (best) or charging them
in parallel (not as good but still far better then in series).

TTYL

 

I would charge the two batteries in parallel using a special isolation diode
with a very small voltage drop. This is how it is normally done in motor
homes and other similiar applications.......good luck....Ross

 

No diode is needed.

In parallel, they both see the same charging voltage. One just has
to be sure to check the battery voltages and remove the battery(s)
from the charger as they become fully charged.

The reason that split charging systems are used on applications like
that which you describe is because the charging apparatus (alternator)
cannot handle charging both together.

 

True that the diode is not necesary if you want to handle it manually. That
is why I said "I would" instead of "You Have to". I mentioned the split
charge diode because it would be simpler and prevent backflow from battery
to battery. It will also allow you to run one battery down without affecting
the starting battery. Not alot of information given here. We don't know the
charger voltage, amperage or the application. I just thought I would toss
that out there in the case it would be helpful....Ross

 

No surprise here....Dimbulb does his google search and posts from
there...and yes...there are some pretty slick diode modules with almost not
drop out there to do the job....Ross

 

It ALSO has to do with the alternator's total available, reliable
output.

JUST like I said. NO diode is needed in a standard charging
situation of two like batteries, and that includes their charge state.
JUST like Floyd said as well.

**** you, Keith Retard Williams. You are a twit that follows people
around like a little cockroach, which is all you are.

 

No. I do not, dipshit.

And in the situation in question, they are not required... at all.

 

Read the post....it never said the diodes were "required"..
And was repeated in a follow up post....

 

Once again, read the posts....it never states the diode is required.....

 

Why bother posting a response if you cannot also bother to make
it useful? The below answer is so vague as to be misleading.

Dissimilar batteries of 12V and 24V can be charged in parallel?

Bwahahahahahahahahahahahahahaha!

 

Sorry, OM. but your post did not mention two 12V batteries.
It only mentioned dissimilar batteries.

Why bother posting a response if you cannot also bother to make
it useful? The answer you gave was so vague as to be misleading.

You didn't respond to the original question, but only sought to
score points by attacking those who did. Shame on you.

Unfortunately your childishness showed up all too well.

I didn't need to make a fool of you, you did it so well by
yourself.

 

Why bother posting a response if you cannot also bother to make
it useful? The below answer is so vague as to be misleading.

A 12 V Nicad and a 12V Lead Acid can be charged in parallel?

Your remarks are dangerous; one is charged by current and the
other by voltage.

I should give up while you are still behind.

 

Whoopie fuckin' doo. The post *I* responded to had you telling him
what *you* would do. I simply stated that it was NOT required.

You were doing fine, until you Jumped on the Keith 'Tard bandwagon
.... again.

 

Then you spewed.

I didn't say that you said they were. READ IT, DIPSHIT.

I merely said they are NOIT required.

Don't get yer bloomers in a bunch, and get your head out of Keith's
ass.

 

You are too fucking retarded to comprehend what you read.

It is quite OBVIOUS to anyone with HALF a brain, that Floyd was
referring to dissimilarly constructed batteries of the same working
voltage.

You are a fuckin' retard (at best) to think that two dissimilar
VOLTAGE batteries could be charged in parallel, or to think that that
was what he meant.

YOUR response was so far off the fuckin' mark, you should leave the
group, and go back to hawkin' newspapers on the street corner.

And to quote you:

Bwahahahahahahahahahahahahahaha! Ya fuckin' twit.

 

Look, you top posting Usenet, and electrical retard..

The THREAD was about 12V batteries.

If you need your fucking hand held to grasp a simple Usenet thread,
you should crawl back up your mother's ass (where you came from), and
be reborn in the shitter, where you belong. Where she subsequently
flushes your lame ass.

You top posting Usenet, and electrical retard!

 

Never say "Thou fool." Lest you expose yourself as one.

You did.