Hi Chilli,
In the summer in unshaded conditions I "see" 17 amps at solar noon, if the batteries are hungry enough or there is inverter use. Based on 5 solar "hours" per day that leaves me with about 85 amp hours going into the battery bank
7 amps means about 40% of the maximum possible. 85 x .4 = 34 amp-hours per day.
My system has 256 watts of panels and a blue sky 3024 di controller with a temperature sensor (I believe the temperature sensor is a MUST DO).
In actual fact, the solar probably does better than the above calculations as it stopped charging at 9 p.m. on 2014 07 21. That means that all parasitic loads are absent for 15 hours per day, as the panels provide the energy so needed.
