Sizing an array for the battery bank in the post below
Using this panel:
131.6ah per day avg / 0.8 battery efficiency / 6.5 = peak array amps = 25.3a
modules in parallel:
25.3a / Imp 6a = 4.21 panels, round up to 5 panels in parallel.
modules in series:
DC system voltage 12v
12v / 12v Vmp = 1 series module.
A simple small array of 5 panels in series will charge this battery bank.
Array size: 12vmp x 6amp x 5 = 360 watts (72watt x 5)
Off to take an exam now! wish me luck.