[laxray]

I am looking at rigging 4 lights on the front of my 15 ft jon boat and maybe 2 more on the sides to the back. Want to run them off of deep cycle. I have been reading a lot. The best I can see on calculations is:

Amps = Watts / Volts

So does that me 4 x 27 watt on a 12 v battery would pull 9 amps?

If so 9amps from a 70 ah battery would go 70Ah/9A=7 hours and then some?

and I could run 6x27 with a 13.5 amp draw and run that for about 5 hours?

Just trying to put some numbers to this I dont thing I will go all night since my 7 and 4 year old wake up a 6am and that usually involves me getting up as well but any help on battery life would be great.

Thanks

 

[NuffDaddy]

I am looking at rigging 4 lights on the front of my 15 ft jon boat and maybe 2 more on the sides to the back. Want to run them off of deep cycle. I have been reading a lot. The best I can see on calculations is:

Amps = Watts / Volts

So does that me 4 x 27 watt on a 12 v battery would pull 9 amps?

If so 9amps from a 70 ah battery would go 70Ah/9A=7 hours and then some?

and I could run 6x27 with a 13.5 amp draw and run that for about 5 hours?

Just trying to put some numbers to this I dont thing I will go all night since my 7 and 4 year old wake up a 6am and that usually involves me getting up as well but any help on battery life would be great.

Thanks

You got it. Just remember to not drain your battery past 40% which is about 12v. You can get a small digital bolt meter on eBay for a couple bucks and will let you keep an easy on on your battery level.

 

[laxray]

Thanks I was just telling my wife that I felt guilty not knowing the calculations off of the top of my head since I just started teaching high school physics. We haven't gotten to electricity yet and it's been 20 years since I've had to calculate this.

 

[NuffDaddy]

Haha. Yup....it all works in a circle. You can also reduce the amps the lights draw by setting them up with 2 batteries to make 24v. Most LEDs are rated for 12 or 24 volt operation but check the lights before you do this. With a lower amp draw, you can run smaller wire and save a few bucks.

 

[NuffDaddy]

And you will easily run all night then if you choose to.

 

[laxray]

So what size wire if I only run 1 12 volt battery?

 

[NuffDaddy]

So what size wire if I only run 1 12 volt battery?

10awg will be plenty to run from the battery to the lights.

 

[TommyBoy]

I am new at this so don't be to tough on me. I have a 1542 Alumacraft that my 12 year old wants me to rig up to bowfish. I was thinking about running LED lights maybe 8 of them. I want to use batteries to run the system, 24 volt i think. So the first of my questions is what size wire do i need to run. The second question is what is the possible run time using the 27 volt LED lights on a 24 volt system? Any suggestions would be great, thank you.

 

[NuffDaddy]

I am new at this so don't be to tough on me. I have a 1542 Alumacraft that my 12 year old wants me to rig up to bowfish. I was thinking about running LED lights maybe 8 of them. I want to use batteries to run the system, 24 volt i think. So the first of my questions is what size wire do i need to run. The second question is what is the possible run time using the 27 volt LED lights on a 24 volt system? Any suggestions would be great, thank you.

They make 27w and 50w LED lights that are generally used for bowfishing. If you are shooting clear water 8 27s will be plenty. Dirty water you might be lacking. It also depends on your budget. You can spend anywhere from $100-$1000 on 8 LEDs. And you get what you pay for. So once you figure out what you want for lights, then you can go onto battery needs

 

[TommyBoy]

I am trying to figure out if i can run enough lights on a 24volt system or will I have to buy a generator. Hate to have to re do something, would rather nail it the first time. Its cheaper that way.

 

[NuffDaddy]

I am trying to figure out if i can run enough lights on a 24volt system or will I have to buy a generator. Hate to have to re do something, would rather nail it the first time. Its cheaper that way.

You will need a fair amour of batteries, especially if you are using a trolling motor too. But it is doable. If you run 300watts of lights you should be able to run a full night on 4 group 24 deep cycles.

 

[8ball7]

12awg is good for 20amps