Kayak Battery Question for Livescope

[Sankea]

Hey!  I have a Kaku Zulu fishing kayak and I have a few battery questions.

 

I have a Garmin ECHOMAP Ultra 106sv and a Livescope LS34 on order.

Would a yak power battery box with either three 7AH lithium or led acid or a 23AH Lithium be able to power that?  I like the Yak Power idea as I could add  lights instead of the makeshift ones I have now.  

I do have a Yak Attack Noctua 10AH Lithium and a 7AH Led Acid battery.  Would those be enough if I were to use the 7AH on the livescope and the 10AH on the 106sv?  

Reason I am asking is I have heard mixed reviews on running the units on the same battery vs dedicated ones.  

Thanks for any input.  

[MN Fisher]

The Ultra 106 draws 2.8-3amps, the LS34 draws 1.75-4.8amps

 

So basically you'd need 7.8ah for every hour you want to run both if they're pulling max power, 4.55ah at minimum power

 

That 23ah Lithium would run those for 2.9-5 hours depending on the power usage.

 

I'd get a larger capacity battery myself.

 

I would NOT use Lead-Acid - using more than half the capacity regularly will severely shorten the lifespan...where-as you can regularly draw 90% of a Lithium battery's power with minimal effect on it's service life.

[FryDog62]

I saw somewhere someone using Livescope on their kayak with 40AH. I plan to add it to my yak this winter and currently have a Dakota 18AH... thinking of combining with a second 18AH = 36AH. 

[casts_by_fly]

I like to plan for a 10 hour fishing day plus some buffer. For that current draw, I’d want to have a 25-30 ah lithium for each. I run a 30 for my humminbird, but a 20 would have been enough.  A 10 ah isn’t enough for a 7+” screen for me. 
 

in your case, I’d use the 23 for the head unit and get another similar one for the transducer. Then use the 7 ah for the accessories. 

 

[TnRiver46]

8 hours ago, MN Fisher said:

The Ultra 106 draws 2.8-3amps, the LS34 draws 1.75-4.8amps

 

So basically you'd need 7.8ah for every hour you want to run both if they're pulling max power, 4.55ah at minimum power

 

That 23ah Lithium would run those for 2.9-5 hours depending on the power usage.

 

I'd get a larger capacity battery myself.

 

I would NOT use Lead-Acid - using more than half the capacity regularly will severely shorten the lifespan...where-as you can regularly draw 90% of a Lithium battery's power with minimal effect on it's service life.

 

I feel as though this is what it’s like if you use a heavy lead battery in a kayak 

[casts_by_fly]

If I put a group 31 into my kayak I'm not sure I could get in myself!  I'd be pushing weight capacity on the boat.  

[Bankc]

I had a group 29 in my kayak for years.  It worked okay, but it was definitely a pain to load, carry, and balance out with everything else.  It was a nightmare to tote on land, but it wasn't too bad once in the water.  Part of that is I weigh a good bit less than half of my kayak's max weight rating.  So even with the heavy battery, I wasn't struggling too bad.  I just got a 50ah lithium to replace it, however.

 

With devices like that, it would be hard to calculate exactly how much you actually draw in real world use.  What I'd do, is just rig it up with the batteries you have now and go out and see how long they last.  If you need the setup to last 4x's longer, then you'll know you need 4x the battery capacity you have now, plus maybe a tad over for a buffer, and because batteries will lose their capacity as they age.  I wouldn't worry about lights.  Unless they're super bright lights, LED's don't consume much power, so you shouldn't have to factor in their power draw for things like this.

[GaryH]

The difference in a 30ah and a 50ah ionic lithium is only 5 lbs and $50 more and the same dimensions. Then you’ll only need 1 battery for your equipment. 

[casts_by_fly]

1 hour ago, GaryH said:

The difference in a 30ah and a 50ah ionic lithium is only 5 lbs and $50 more and the same dimensions. Then you’ll only need 1 battery for your equipment. 

 

Good point.  I thought he already had the 23 ah.  In that case, I'd do like you said and be done with it.  Its one battery to charge.  The 60 AH amped battery at $379 would probably be where I'd go.  Its overkill for needs, but its a solid battery and would ensure that if you're running max power all day you have a full day of fishing available.

[MN Fisher]

1 hour ago, casts_by_fly said:

The 60 AH amped battery at $379 would probably be where I'd go. 

I've liked the Mighty Max AGMs, I think their LiFePo4s would probably be good. Their 17.5lb 55ah goes for $265

[Fishingmickey]

     I'm running a Garmin 93SV UHD and livescope.  I use a 17AH FPV lithium for the 93SV and a 23AH Dakota lithium for the livescope.  They will take me through a 10-12 hour day.  I should install a switch on my livescope so I can turn it off when I'm not using Panoptix. I like having two batteries for it. So if my livescope battery dies I've still got the ability to run the 93SV.

     I carry two of the 17AH and one 23AH in the center hatch of my PA14. The 17AH FPV's have a screw in connection to the battery.  The FPV batteries are small 5" x 3" x 2.75" and weigh just over a pound. I've got two of them stuck together with some 3M duolock (it's like velcro).  So if I need to change batteries it is very easy to unscrew the connector from one and screw into the other.  I've gotten a low battery warning once on the 93SV.

[detroit1]

TR46-i thought you had boats...