Battery cable selection

I am putting two 12V batteries together
http://www.batterymart.com/p-hawker-...t-battery.html
to make a 24V battery.

What size cable should I use to make the serial connection?
http://shop.genuinedealz.com/Marine%...ttery%20Cable/

Thanks,
Karl

wrote in message
...
I am putting two 12V batteries together
http://www.batterymart.com/p-hawker-...t-battery.html
to make a 24V battery.

What size cable should I use to make the serial connection?
http://shop.genuinedealz.com/Marine%...ttery%20Cable/

Same size as the main battery cable. It will see the same amperage.
--
Jim in NC

wrote:

I am putting two 12V batteries together
http://www.batterymart.com/p-hawker-...t-battery.html
to make a 24V battery.

What size cable should I use to make the serial connection?

Longer the cable, bigger the cable...
connect two batteries with a 1"cable: a 6AWG cable will work

flat copper bar will be better (less losses):
http://www.aircraftspruce.com/catalo...ges/busbar.php

by
--
Volem rien foutre al païs!
Philippe Vessaire Ò¿Ó¬
** Posted from http://www.teranews.com **

no, it will see half the amperage at same wattage

"Morgans" schrieb im Newsbeitrag
...

wrote in message
...
I am putting two 12V batteries together
http://www.batterymart.com/p-hawker-...t-battery.html
to make a 24V battery.

What size cable should I use to make the serial connection?
http://shop.genuinedealz.com/Marine%...ttery%20Cable/

Same size as the main battery cable. It will see the same amperage.
--
Jim in NC

"oilsardine" wrote in message ...
no, it will see half the amperage at same wattage

Huh? You are joking...right?

Vaughn

"oilsardine" wrote in message
...
no, it will see half the amperage at same wattage

No Jim was correct. The amperage is the same.

It is a series circuit - the amperage is the same throughout.

If you were wiring two batteries in parallel (and getting 12 volts from the
pair), then each battery would deliver 1/2 the amps (approx.)

--
Geoff
The Sea Hawk at Wow Way d0t Com
remove spaces and make the obvious substitutions to reply by mail
When immigration is outlawed, only outlaws will immigrate.

Kirchoff is rolling over in his grave.

Jim

--
"It is the mark of an educated mind to be able to entertain a thought
without accepting it."
--Aristotle


"oilsardine" wrote in message
...
no, it will see half the amperage at same wattage

"Philippe" wrote in message
news:1770438.ul5SB0L1ai@GastonCoute...
wrote:

I am putting two 12V batteries together
http://www.batterymart.com/p-hawker-...t-battery.html
to make a 24V battery.

What size cable should I use to make the serial connection?

Longer the cable, bigger the cable...
connect two batteries with a 1"cable: a 6AWG cable will work

flat copper bar will be better (less losses):
http://www.aircraftspruce.com/catalo...ges/busbar.php

by
--
Volem rien foutre al païs!
Philippe Vessaire Ò¿Ó¬
** Posted from http://www.teranews.com **

A copper bar would indeed work much better than a short cable. If you plan
to join two standard aircraft batteries sharing the same battery box, a
well-fitted copper bar is easier to install than a cable.

You can make a bar by flattening a short section of 1/2" thick-wall copper
tubing (as used for refrigeration lines) in a vise and drilling two 5/16"
holes the correct distance apart (about two inches I think, but you should
measure). Coat it with grease each time it's installed or it will corrode
rapidly.

Beech Barons use a similar copper bar, tin-plated as I recall. You could
buy one.

"RST Engineering" wrote in message
m...
Kirchoff is rolling over in his grave.

Jim

He obviously needs the exercise.... ;-)

Peter
Node theory sux!

Dale Scroggins wrote:

"Philippe" wrote in message
news:1770438.ul5SB0L1ai@GastonCoute...
wrote:

I am putting two 12V batteries together
http://www.batterymart.com/p-hawker-...t-battery.html
to make a 24V battery.

What size cable should I use to make the serial connection?

Longer the cable, bigger the cable...
connect two batteries with a 1"cable: a 6AWG cable will work

flat copper bar will be better (less losses):
http://www.aircraftspruce.com/catalo...ges/busbar.php

by
--
Volem rien foutre al païs!
Philippe Vessaire Ò¿Ó¬
** Posted from http://www.teranews.com **

A copper bar would indeed work much better than a short cable. If you
plan to join two standard aircraft batteries sharing the same battery
box, a well-fitted copper bar is easier to install than a cable.

You can make a bar by flattening a short section of 1/2" thick-wall
copper tubing (as used for refrigeration lines) in a vise and drilling
two 5/16" holes the correct distance apart (about two inches I think,
but you should measure). Coat it with grease each time it's installed
or it will corrode rapidly.

Beech Barons use a similar copper bar, tin-plated as I recall. You
could buy one.




The truly energetic could tin the bar with solder or, wait for it, tin.

Dan, U.S. Air Force, retired