I am setting up a solar rig and was looking for advice from some experienced persons.

What I need to know is what size panel do I need, will I require anything else such as regulators and battery charger? If so what would be the spec.

Object is to charge a 20Ah SLA battery and power 12v devices.

Total current draw on the 12v devices is approx 1.5Amps Peak.

Thanks in Advance.