Question for you electronics wizards...>>>

Your fish finder will be fine across one of the batteries. If you're
hesitant, apply (or borrow) your voltmeter across either of the batteries.
You'll find it reads ... 12 volts.


"Marty S." wrote in message
...
I'm running 2 12-volt batteries running in series to power my 24-volt
electric motor in my jon boat (on an electric-only reservoir) and I want
to
run a fish finder. Here's my question -- can I safely run the fish finder
off of one of the 2 12-volt batteries while running the 24-volt motor?
Or,
is that going to burn up the fish finder? Should I just invest in a
couple
of 6-volt lantern batteries instead?

--
Marty S.
Baltimore, MD USA

I've checked the voltage and either battery by itself reads 12 volts when
hooked up in series, and they are 24 together. However, is there an issue
of amps or watts or current or whatever else flows in the wires? The fish
finder draws about 110 milliamps (whatever that is)... Will it burn out or
crack or implode or fizz out or whatever? (as you can tell, I didn't spend
a whole lot of time paying attention in 7th grade electrical shop)

--
Marty S.
Baltimore, MD USA


"Bowgus" wrote in message
. rogers.com...
Your fish finder will be fine across one of the batteries. If you're
hesitant, apply (or borrow) your voltmeter across either of the batteries.
You'll find it reads ... 12 volts.


"Marty S." wrote in message
...
I'm running 2 12-volt batteries running in series to power my 24-volt
electric motor in my jon boat (on an electric-only reservoir) and I want
to
run a fish finder. Here's my question -- can I safely run the fish
finder
off of one of the 2 12-volt batteries while running the 24-volt motor?
Or,
is that going to burn up the fish finder? Should I just invest in a
couple
of 6-volt lantern batteries instead?

--
Marty S.
Baltimore, MD USA

Marty S. wrote:
I've checked the voltage and either battery by itself reads 12 volts when
hooked up in series, and they are 24 together. However, is there an issue
of amps or watts or current or whatever else flows in the wires? The fish
finder draws about 110 milliamps (whatever that is)... Will it burn out or
crack or implode or fizz out or whatever? (as you can tell, I didn't spend
a whole lot of time paying attention in 7th grade electrical shop)


110 Milliamps (0.110 amps per hour current flow) is what your finder
draws at 12 volts. if you made the mistake and hooked it up to both
batteries (24 volts) then it would draw 210 milliamps, burning out your
finder, then increasing the amp draw even more as wire's insulation
melts, and wires short out to each other) . or at least blowing the fuze.
As long as your hooked to the Positive and negative of the same battery
you have nothing to worry about, your finder is wired up correctly, that
is if your circuit is not grounded to the boat, and all fish finders I
know of are not, they have a floating circuit (both Positive and
negative wires go to the finder)
--
Rodney Long,
Inventor of the Long Shot "WIGGLE" rig, SpecTastic Thread
Boomerang Fishing Pro. ,Stand Out Hooks ,Stand Out Lures,
Mojo's Rock Hopper & Rig Saver weights, Decoy Activator
and the EZKnot http://www.ezknot.com

In rec.boats Marty S. wrote:
: I've checked the voltage and either battery by itself reads 12 volts when
: hooked up in series, and they are 24 together. However, is there an issue
: of amps or watts or current or whatever else flows in the wires? The fish
: finder draws about 110 milliamps (whatever that is)... Will it burn out or
: crack or implode or fizz out or whatever? (as you can tell, I didn't spend
: a whole lot of time paying attention in 7th grade electrical shop)

Shouldn't be a problem connecting across one battery. Especially given
that the fish finder only draws 110 mA.

b.

The easiest way to hook them up so you will not have electrical interaction
problems is to attach the negative wire of the fish finder to the same
battery terminal as the negative wire of the trolling motor. That way both
items use the same "ground" path.

Bill Grannis
service manager

PerZakly

Get in the habit of connecting the fish finder and everything else (lights,
etc.) that way. Someday there will be an internal connection of that "ground"
to the boat and other users. This way no problems will develop.

cheers

oz