Will this work and do I need a fuse? Mean Well power supply

I would be a little concerned about 15v
12v is not high enough for charging
And 15v is a bit high, for anything more than few minutes kick in the pants aka equalize
It's not adjustable it is selectable, meaning you can't get a voltage between the selections

Maybe Mexicowanderer will see this and give his opinion
He's are battery expert,