100 watts of solar for $99, shipped and with controller
Is this for real? Flexible, too!
Forum Discussion
Joe417 wrote:
I have limited knowledge on solar panels but I noticed that it is a 4x8 panel. Wouldn't that be 18V if every cell were perfect and a lot better than 25 percent efficient?? I read something about 0.5V per cell.
most '12v' panels are 36 cell this one happens to be 32 cell.
12v panels can operate over a wide range, from zero volts to ~22v depending on the load, sun light, panel temp, ....
good primer
https://www.victronenergy.com/upload/documents/White-paper-Which-solar-charge-controller-PWM-or-MPPT.pdf
standard test conditions include one sun of 1000w/meterxmeter, @25% eff, a square meter panel would test @ 250w.
