Unfortunately, I think your pissing in the wind thinking that a 60 watt solar panel will solve your electical problems, you've got to do that maths and that
means spending money to save money. Divide 60 by 13 which is what a fully charged 12v battries volts will be, so you max amps output will only be 4.6amps MAX.
Ive got two 130watt =260w (20 amps) panels and that lot cost over £1200, but during summer I wont use the charger until October or later. If you have an inverter
its just like being on the mains!
It pays to spent money when buying solar and its great if you get it right!
Any question feel free to e-mail me, Kristian.