Lithium battery question

[CatFan]

This is what I’m wanting to do. But, when you have 10ga running to LS it defeats the purpose when you choke it down to the 16ga wire on the connectors. But I am also gonna admit I have not fully understood or agree with the whole 10ga wire deal. No more than LS pulls I dont inderstand the ‘need’ for 10ga wire. My2bits

Wire resistance is per foot. 16 gauge has 4 times the resistance of 10 gauge, so you get quite a bit better connection running the 10 most of the way.

[Kevin22]

I have onboard charger and installed one of these in my spash well. It only took maybe 5 minutes to mark out the hole and drill it with a hole saw. One of the better improvements I've made. Now i just back the boat into the garage, flip open the back compartment for air vent, and plug the extension cord into the port. All can be done from outside and no more fishing around for cables or hooking up chargers. They also sell it with 2 ac plugs, so you can add another onboard charger to your battery and also attach everything to the same port

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[DockShootinJack]

Good idea

[DockShootinJack]

Could be the lower resistance offered by the 10ga wire is what the livescope requires

[Soonerdg65]

The long and the short of it is, especially with modern sonar and FFS, is that the more voltage to the unit the better the picture. So running 10 ga wire will get you significantly more voltage to your unit than 16 ga wire over a 17-20 foot run. The foot or so of smaller gauge wire at the unit doesn't affect the voltage nearly as much as the long run.

[Kevin22]

The long and the short of it is, especially with modern sonar and FFS, is that the more voltage to the unit the better the picture. So running 10 ga wire will get you significantly more voltage to your unit than 16 ga wire over a 17-20 foot run. The foot or so of smaller gauge wire at the unit doesn't affect the voltage nearly as much as the long run.

Negative. Livescope is internally regulated to 12v, so any voltage over 12v will not improve picture. Under 12v is not noticeable until you get around 11v. Lithium batteries are dead at 12v, running volts is 13-13.5v for 90% of capacity. so even if you have tiny wiring, you are going to be just fine as long as your transducer is getting the appropriate AMPS without heating up your wiring. You cannot drop enough voltage in a 20ft run to hurt livescope, with a lithium battery. You will run a fire risk if you go too small.

16ga is actually appropriate if you are just running your livescope off the wire run, on a 20' run. Livescope draws 3A at start up for 3 seconds, then draws 1.75 while running. I personally would not use 16, because the price difference isnt that much to go ahead and use 14 or 12 marine wiring.

Likely your running lights draw more power than livescope, that is what most guys do not understand. Your actual head unit is what is drawing the most power.

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