24 volt system question

To all:

This is somewhat a continuation of the charging batteries and charging them
discussion. Let's say you have two 12 volt batteries hooked up in series
for a 24 volt trolling motor. Can you use a two bank 12 volt charger
without disconnecting the two batteries (essentially temporarily removing
them from the series connection)? If so, I assume you hook up one bank to
one battery doing this for each battery.

I have not got this worked out in my mind, but it seems that if those two
batteries are hooked up in series, how do you charge them individually as 12
volts without disconnecting them?

Jeff

Jeff Durham wrote:

To all:

This is somewhat a continuation of the charging batteries and charging them
discussion. Let's say you have two 12 volt batteries hooked up in series
for a 24 volt trolling motor. Can you use a two bank 12 volt charger
without disconnecting the two batteries (essentially temporarily removing
them from the series connection)? If so, I assume you hook up one bank to
one battery doing this for each battery.

I have not got this worked out in my mind, but it seems that if those two
batteries are hooked up in series, how do you charge them individually as 12
volts without disconnecting them?

Jeff

I have been using this system with a Dual Pro for years. You connect one
set of leads to one battery and the other set to the other battery. In
this charger each bank has its own ground. Therefore each bank only
"sees" the battery to which it is connected.

Essentially correct. Youc an charge each battery independently without
disconnecting them. Although it probably wouldn't do any harm I wouldn't
operate the trolling motor while charging.

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"Jack Schmitt" wrote in message
...
Jeff Durham wrote:

To all:

This is somewhat a continuation of the charging batteries and charging
them
discussion. Let's say you have two 12 volt batteries hooked up in
series
for a 24 volt trolling motor. Can you use a two bank 12 volt charger
without disconnecting the two batteries (essentially temporarily
removing
them from the series connection)? If so, I assume you hook up one bank
to
one battery doing this for each battery.

I have not got this worked out in my mind, but it seems that if those
two
batteries are hooked up in series, how do you charge them individually
as 12
volts without disconnecting them?

Jeff

I have been using this system with a Dual Pro for years. You connect one
set of leads to one battery and the other set to the other battery. In
this charger each bank has its own ground. Therefore each bank only
"sees" the battery to which it is connected.

FWIW - My Ranger has the batteries connected in series but there is a diode
in each line between batteries. I assume this is to make them seem in
series when running the trolling motor, but independent when charging?

Anyone have any feedback on this? I always feel like I should have a
disconnect switch between the batteries so when I am charging, they are
truly independent, but the system works.

Scott....
Chetek, WI.


"Bob La Londe" wrote in message
...
Essentially correct. Youc an charge each battery independently without
disconnecting them. Although it probably wouldn't do any harm I wouldn't
operate the trolling motor while charging.

--
Public Fishing Forums
Fishing Link Index
www.YumaBassMan.com

webmaster
at
YumaBsssMan
dot
com
"Jack Schmitt" wrote in message
...
Jeff Durham wrote:

To all:

This is somewhat a continuation of the charging batteries and charging
them
discussion. Let's say you have two 12 volt batteries hooked up in
series
for a 24 volt trolling motor. Can you use a two bank 12 volt charger
without disconnecting the two batteries (essentially temporarily
removing
them from the series connection)? If so, I assume you hook up one
bank
to
one battery doing this for each battery.

I have not got this worked out in my mind, but it seems that if those
two
batteries are hooked up in series, how do you charge them individually
as 12
volts without disconnecting them?

Jeff

I have been using this system with a Dual Pro for years. You connect one
set of leads to one battery and the other set to the other battery. In
this charger each bank has its own ground. Therefore each bank only
"sees" the battery to which it is connected.

A diode is like a check valve in a piping system, it will only flow current
one way. If you hook up the leads backwards any equipment down line won't be
damaged, even if they are polarity sensitive, because no current can flow in
the reverse direction.

"Jack Schmitt" wrote in message
...
Jeff Durham wrote:

To all:

This is somewhat a continuation of the charging batteries and charging
them
discussion. Let's say you have two 12 volt batteries hooked up in
series
for a 24 volt trolling motor. Can you use a two bank 12 volt charger
without disconnecting the two batteries (essentially temporarily
removing
them from the series connection)? If so, I assume you hook up one bank
to
one battery doing this for each battery.

I have not got this worked out in my mind, but it seems that if those
two
batteries are hooked up in series, how do you charge them individually
as 12
volts without disconnecting them?

Jeff

I have been using this system with a Dual Pro for years. You connect one
set of leads to one battery and the other set to the other battery. In
this charger each bank has its own ground. Therefore each bank only
"sees" the battery to which it is connected.

Depends on the charger. Separate floating grounds then like the Dual Pro.
You can buy a 4 pin connector for the trolling motor that has to different
plugs. Teh trolling motor plug shorts the proper two pins to give you 24
volts and then there is a charging plug that sets up as 2 parallel connected
batteries.
Bill

Jeff Durham wrote:

I have not got this worked out in my mind, but it seems that if those two
batteries are hooked up in series, how do you charge them individually as 12
volts without disconnecting them?

Jeff

Jeff,

Hey, the answer is if the charger negative lead represents 0 volts, but not
earth ground to both of the batteries, it will charge fine with them connected
in series. Other guys have talked about having a diode in the line to isolate
the batteries. The down side to this is that there is a .6 volt drop in the
voltage through the diode. If the charger puts out enough voltage to overcome
this and fully charge the batteries, then no problem.

Hope this helps...
Bill Durham!