Cheapest 2019 rapid shutdown solution for new system

[Kennedy Muberekwa]

I am actually surprised those GEL batteries lasted 2 years. Usually they don't like to be heavily cycled and more than likely they have boiled off any fluid that was in them.

If you can, I would look into 6V FLA type which can provide you with more than 200Ah 12v system. But depending on what your CC is 750watts of panels may be generating a charge rate higher than C/8 which can hurt most battery chemistries.

Thanks dear, I really appreciate