Solar for kayak

[FishNinjaY]

Originally Posted by alanw

That just doesn't sound right according to Ohm's Law.

V = I * R

Voltage = Current * Resistance


The resistance of the motor is a constant, so the only things that can change is volts and current which means that as voltage goes down so does current.

That means that a 6 volt 10 amp battery should last longer than a 12 volt 10 amp battery.

This was my understanding as well.. Most of the pumps out there are "rated" for 12V, and around 2.5Amp draw, right? So, people have been advising using 6V battery to modestly decrease the water flow, and to prolong run time on the battery.

From your description, you are running BOTH your livewell and fishfinder off a single 12V10A battery? For way less than the cost of a complex solar set-up, you could get TWO 12V12A LiFePO4 batteries, that would weigh less also. I don't have this battery yet, but am considering buying it tomorrow.

http://www.amazon.com/Bioenno-Power-.../dp/B0083BMHPY

BWE member, GregAndrews (& others), here know a lot more about this. I'd look into this route, instead of solar. Good luck.