Notes: "Load" refers to equipment to be operated from 12 volts DC.
This includes inverters that convert DC to a distorted square wave "AC"
to operate small devices, usually less than 100 watts total.
Deep discharge batteries, such as the Trojan T-105
golf cart battery, are recommended.
This allows operation during moderately cloudy weather.
The "missing panel" string supplies about 1 to 3 amps,
thus the array total is approximately 5 + 5 + 3 = 13 amps. max.
in the brightest overhead sunlight condition.
Typical Charge Cycle Data - "Sunny Coastal CA Mid-July Day"
Solar Battery
Time Amps Volts Notes
----- ----- ------- -----
7 AM 0.5 12.4 cloudy
8 AM 1.5 12.5
9 AM 2.0 12.6
10 AM 8.0 12.9 sunny
11 AM 9.0 13.0
12 PM 10.0 13.1
1 PM 10.5 13.25
2 PM 11.0 13.4
3 PM 9.0 13.6 broken clouds
4 PM 8.0 13.9
5 PM 2.5 14.3 fully charged batteries, finally!
6 PM 0.5 12.84 panels shaded from sun
Hinges
Lift Arm - Angle Markings
Last Update: 2/20/2012 by K6NE