More Solar for "Us"
Ok, I went off.the deep end? Bought 3 used 37watt uni-solar panels and a blue sky 2000e controller for the hefty price of $400, They were being listed as 75w panels, they are not The tested open...
Forum Discussion
You got 0.1V line drop at 8.52A. Line resistance is:
R = delta V / I = 0.1V/8.52A = 11.7 mohm.
That's not bad.
When the controller is pegged at 14.7V, the battery voltage is:
Vbat = Vconv - I * Rline = 14.7V - 10A * 11.7 mohm
Vbat = 14.58V (not much of a drop)
I would monitor battery gassing the next time controller is sitting at 14.7V.
Are you going to do a comparison between the old and new controller? Difference in AH per day would be interesting.
R = delta V / I = 0.1V/8.52A = 11.7 mohm.
That's not bad.
When the controller is pegged at 14.7V, the battery voltage is:
Vbat = Vconv - I * Rline = 14.7V - 10A * 11.7 mohm
Vbat = 14.58V (not much of a drop)
I would monitor battery gassing the next time controller is sitting at 14.7V.
Are you going to do a comparison between the old and new controller? Difference in AH per day would be interesting.
MrWizard wrote:
current voltage readings: from panels 14.53 into the controller with an 8.52 amp output from controller, output voltage measures 13.52 @ controller & 13.02 @ batteries
