batteries...question

[gingersruletheworld]

can i link two batteries together without risk?

 

[Pierutrus]

Re: batteries...question

Yes.
What are you trying to do?

 

[insanity]

Re: batteries...question

Some one should have a diagram to wire up in a 12v circuit. Also there is a device that allows you to run duel batteries and use only one at a time. All you do is turn a nob to switch them over. It nice thing to have instead of having 2 dead batteries you will have only 1 and a back up.

 

[insanity]

Re: batteries...question

This is it.

http://www.iboats.com/Ignition_Prot...0194110--**********.459378826--view_id.167249

 

[Boss Hawg]

Re: batteries...question

You can run two conected but it's BEST to have two of the same style, age, condition, ect

 

[justchange]

Re: batteries...question

can i link two batteries together without risk?

that's how they do it on semis. As said above. Use the switch to isolate one from the other.

 

[insanity]

Re: batteries...question

What are your plans? I have plans to run duel batteries and capacitors. I will have a main battery and a back up, the capacitors are to run electronics like fish finders and a sound system, so that way there is less strain on a battery.

 

[Pierutrus]

Re: batteries...question

Yes.
What are you trying to do?

And I go back to this.

 

[Splat]

Re: batteries...question

What are your plans? I have plans to run duel batteries and capacitors. I will have a main battery and a back up, the capacitors are to run electronics like fish finders and a sound system, so that way there is less strain on a battery.

HUH?!?!?!?!

A Cap would only be useful as a buffer against a high sudden drain. Totally unneeded on a boat unless your running something like a BIG BIG amplifier on a radio that depands high current suddenly.

A Fishfinder draws very small amounts of power.

Bill

 

[gingersruletheworld]

Re: batteries...question

tks for all the input...my plan was just to have them linked so that I can have back up power as well I am planning on adding more lights (mood lighting...lol) and stereo with sub.....also, when i am putting my outdrive into travelling position it seems to really draw a lot (volt meter drops)....sorry brand new so bit of naieve

 

[insanity]

Re: batteries...question

HUH?!?!?!?!

A Cap would only be useful as a buffer against a high sudden drain. Totally unneeded on a boat unless your running something like a BIG BIG amplifier on a radio that depands high current suddenly.

A Fishfinder draws very small amounts of power.

Bill

That's what I though but after first hand experience they allow long periods of power draw and no actual power drain from the batt. Had a cap power 3 12" subs for about 8 hours before it went dead. I also had a fish finder drain a batt dead in a days fishing, it was a brand new batt charged to full. Luckily I had a back up on the boat.

From what I thought a cap did which was for sudden power drains from a amp, acted like a second batt.

 

[insanity]

Re: batteries...question

tks for all the input...my plan was just to have them linked so that I can have back up power as well I am planning on adding more lights (mood lighting...lol) and stereo with sub.....also, when i am putting my outdrive into travelling position it seems to really draw a lot (volt meter drops)....sorry brand new so bit of naieve

Run a switch like I linked, then run a cap for the sound. Do not run the 2 batts at once run off of one so that way you are not up a creek with no paddle. Like I have said before that I had to rely on my spare to run. I drained the main batt with a fish finder in 1 day.

 

[Splat]

Re: batteries...question

That's what I though but after first hand experience they allow long periods of power draw and no actual power drain from the batt. Had a cap power 3 12" subs for about 8 hours before it went dead. I also had a fish finder drain a batt dead in a days fishing, it was a brand new batt charged to full. Luckily I had a back up on the boat.

From what I thought a cap did which was for sudden power drains from a amp, acted like a second batt.

There are easier and SAFER ways to create a reserve capacity that are way more practical then using a capacitor. And although true they can be used as mini batteries, their storage capacity, and potential to "dump" all their reserve quickly, negates such use practically. A second battery, with a switch would be a safer alternative.

Also capacitors are used for a variety of things including noise filtering, power conditioning, they are used heavily in electric motors, and even in some very special uses like capacitive coupling.

Bill

 

[bruceb58]

Re: batteries...question

What are your plans? I have plans to run duel batteries and capacitors. I will have a main battery and a back up, the capacitors are to run electronics like fish finders and a sound system, so that way there is less strain on a battery.

Huh!!!!!...first off, what do you think charges up the capacitor in the first place? Second, do you realize how big a capacitor you would need that would hold enough charge to power something drawing as little as a fishfinder for an hour?