If you want a good battery for your minn kota and light.
my best estimation this battery will give your 1.5hrs at full throttle, but last all day if you use it at half throttle.
https://www.bioennopower.com/collect...attery-charger
My friend went the cheaper alternative he bought a blue optima car battery deep cycle, last him about 50 mins full throttle all 4-6hrs at less that half throttle.