Dani - thank you so much for sharing all of the details of your PV system in these two posts! If I'm not being too greedy, can I ask for one more photo of the display on your Outback charge controller - when the IN voltage is under 60 and the OUT voltage is still over 12. I know there are a lot of folks watching and learning from you. The MPPT controllers are generally much more efficient than the less expensive PWM charge controllers, but the differences lose a lot of folks in the math. That difference becomes really obvious when you look at panels connected in series for an MPPT controller versus panels connected in parallel for a PWM controller. When the panels are putting out less voltage than the battery level, a PWM controller will not charge the batteries at all but an MPPT controller will continue to put watts in the bank until the sum of the panel voltages drops below the battery level. This makes a HUGE difference on partly cloudy days and early morning and late evening. With your setup, you should still be drawing solar power into the batteries when each panel's individual output has dropped to 3V! Well done!
Well, Just Me, here is the pic as requested...
|This pic of our Outback charge|
controller was taken at 7.00p.m. when
it was overcast and dark outside
Here is a close-up of the Outback charge controller screen:
Just Me - thank you for your e-mail - I'm very grateful for the education. Should the occasion arise in future, feel free to comment on my blog - that way everyone can learn from my mistake :) But, I reckon it's just as well that RMan is in charge of the power generation...