Battery question

John wrote:

 > "me" <mgarvie1 DeleteThis @bellsouth.et> wrote in message news:<a8AKb.13012$vO5.8130@bignews6.bellsouth.net>...
  > > You were all such great help when I built my kayak and canoe, I thought
  > > someone might be able to help me on this. I bought a small 16 foot boat
  > > last month with a 60 4 stroke Yamaha and wanted to install a 12 volt
  > > trolling motor for fishing. My question is, should I install a seperate
  > > deep cell battery for the trolling motor and charge it when I'm done
  > > fishing, or replace the battery that's on the boat with two deep cells. I
  > > figured the motor would recharge the batteries but I wasn't sure if they
  > > could handle starting the motor, running the trolling motor, bilge, lights,
  > > and my son's Game Boy. And would the motor be able to recharge both
  > > batteries. Any suggestions or opinions?
 >
 > I'm not sure if you'll really need a seperate trolling motor. Why not
 > try fishing without it at least a few times first, then, if you really
 > need it, OK, buy one.
 >
 > But, if you really feel you need a trolling motor, I would go with two
 > batteries and a battery switch. Set the switch to one of the battery
 > positions (battery 1 or battery 2, not the both position)when using
 > the trolling motor and, when you run the outboard, set it to the both
 > position. This way, when running the trolling motor, worst case, you
 > run the one battery until it's dead, then you just flip the switch to
 > the other battery position and you can still start the outboard with
 > the other battery. By switching to the both position when running the
 > outboard you can charge both batteries.

or use a "battery isolator" from JC whitney. About 70 bucks. One charge circuit, two discharge
circuits. I think it is just a couple of diodes in a large heatsink, but they DO work...


--

A friend is someone who knows you, understands the essential conflicts in your thinking, in your
morals, and in your philosophy, and like you anyway.<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Battery question 

Add a deep discharge for trolling.

Depending on your charging circuitry, you will either be able to do 2 at
once or you will need to buy a dual charger for the Yamaha.

What you want, is the ability to "isolate" the 2nd battery for the trolling
motor so you always have a fully charged main battery for starting.


"me" <mgarvie1.DeleteThis@bellsouth.et> wrote in message
news:a8AKb.13012$vO5.8130@bignews6.bellsouth.net...
 > You were all such great help when I built my kayak and canoe, I thought
 > someone might be able to help me on this. I bought a small 16 foot boat
 > last month with a 60 4 stroke Yamaha and wanted to install a 12 volt
 > trolling motor for fishing. My question is, should I install a seperate
 > deep cell battery for the trolling motor and charge it when I'm done
 > fishing, or replace the battery that's on the boat with two deep cells. I
 > figured the motor would recharge the batteries but I wasn't sure if they
 > could handle starting the motor, running the trolling motor, bilge,
lights,
 > and my son's Game Boy. And would the motor be able to recharge both
 > batteries. Any suggestions or opinions?
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Battery question 

Generally speaking, the alternators on outboards are NOT strong enough to
recharge a discharged trolling motor battery in any kind of normal
timeframe... yes, it can replenish the trolling battery somewhat, but I
believe you should factor in a battery charger fot topping off after the
fishing trip.

Delaware Jim.
"Dazed and Confuzed" <dedmann.TakeThisOut@netnitco.net> wrote in message
news:3FFB475F.1BEA76E4@netnitco.net...
 > John wrote:
 >
  > > "me" <mgarvie1.TakeThisOut@bellsouth.et> wrote in message
news:<a8AKb.13012$vO5.8130@bignews6.bellsouth.net>...
   > > > You were all such great help when I built my kayak and canoe, I
thought
   > > > someone might be able to help me on this. I bought a small 16 foot
boat
   > > > last month with a 60 4 stroke Yamaha and wanted to install a 12 volt
   > > > trolling motor for fishing. My question is, should I install a
seperate
   > > > deep cell battery for the trolling motor and charge it when I'm done
   > > > fishing, or replace the battery that's on the boat with two deep
cells. I
   > > > figured the motor would recharge the batteries but I wasn't sure if
they
   > > > could handle starting the motor, running the trolling motor, bilge,
lights,
   > > > and my son's Game Boy. And would the motor be able to recharge both
   > > > batteries. Any suggestions or opinions?
  > >
  > > I'm not sure if you'll really need a seperate trolling motor. Why not
  > > try fishing without it at least a few times first, then, if you really
  > > need it, OK, buy one.
  > >
  > > But, if you really feel you need a trolling motor, I would go with two
  > > batteries and a battery switch. Set the switch to one of the battery
  > > positions (battery 1 or battery 2, not the both position)when using
  > > the trolling motor and, when you run the outboard, set it to the both
  > > position. This way, when running the trolling motor, worst case, you
  > > run the one battery until it's dead, then you just flip the switch to
  > > the other battery position and you can still start the outboard with
  > > the other battery. By switching to the both position when running the
  > > outboard you can charge both batteries.
 >
 > or use a "battery isolator" from JC whitney. About 70 bucks. One charge
circuit, two discharge
 > circuits. I think it is just a couple of diodes in a large heatsink, but
they DO work...
 >
 >
 > --
 >
 > A friend is someone who knows you, understands the essential conflicts in
your thinking, in your
 > morals, and in your philosophy, and like you anyway.
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Battery question 

And interestingly enough, an alternator is not a battery charger ...
meaning, if you were to run the deep cycle right down, then attempt to
charge it using the alternator, you would likely find the alternator getting
very hot and possibly failing ... my understanding.

I myself use a starting battery (450 amp) and a deep cycle for trolling.
Last season I tried charging the deep cycle "on the way out" and "on the way
back" using jumper cables ... every canadian has a set of these, somewhere
... to the starting battery after starting the engine (3.8 litre V6, 70
amp alternator). Seems to work, so this year I'll install appropriate wiring
and a switch.

But I will be careful not to discharge the deep cycle to far. If I do, I'll
charge it when I get home.


"me" <mgarvie1.TakeThisOut@bellsouth.et> wrote in message
news:a8AKb.13012$vO5.8130@bignews6.bellsouth.net...
 > You were all such great help when I built my kayak and canoe, I thought
 > someone might be able to help me on this. I bought a small 16 foot boat
 > last month with a 60 4 stroke Yamaha and wanted to install a 12 volt
 > trolling motor for fishing. My question is, should I install a seperate
 > deep cell battery for the trolling motor and charge it when I'm done
 > fishing, or replace the battery that's on the boat with two deep cells. I
 > figured the motor would recharge the batteries but I wasn't sure if they
 > could handle starting the motor, running the trolling motor, bilge,
lights,
 > and my son's Game Boy. And would the motor be able to recharge both
 > batteries. Any suggestions or opinions?
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Battery question