Transporting Solar Panel In A Toad's 4' X 6' Roof Rack

Hi Mex,

The consensus is that below 400 watts it may ultimately be cheaper to have nominal 12 volt panels and a GOOD pwm controller with adjustable set points.

used Kyocera KC120 120 watt nominal 12 volt panel

Kyocera KC120

Specifications:
Maximum Power: 120 watts
Maximum Power Voltage: 16.9 volts
Maximum Power Current: 7.10 amps
Open Circuit Voltage: 21.5 Voc
Short-circuit Current: 7.45 amps

Dimensions (LxWxD): 56.1" x 25.7" x 2.2" (1425 x 653 x 59 mm)

Sunsaver 20 amp charge controller

Standard Controller Features:

Temperature compensation
High level of lightning protection
Computerized production testing
Ambient temperatures of -40°C to +60°C
Expected 15 year life
Parallel capability for higher current ratings
Easy to use
No need to derate- 25% design margin
Constant voltage, PWM series charging
Reverse current protection (at night)
ISO 9002 manufacturing
High efficiency, low self-consumption
Tropicalization-Epoxy or conformal coating
Five year warranty