solar panel amps?

  Ok I am confused here.

Say you have a 85 watt solar panel rated at 4.8 amps ( at 17 volts)
What happens when it goes thru your charge controler and drops to 12
volts? 7.08 amps@12 volts?

  Merlin-7 KI4ILB wrote:

yes. an 85 watt panel will produce 7 watts at full sun. I have a 90 watt
array that produces 7.5 amps at full sun.

http://www.green-trust.org/wiki/index.php?title=Our_Solar_PV_System


--
Steve Spence
Dir., Green Trust, http://www.green-trust.org
Contributing Editor, http://www.off-grid.net
http://www.rebelwolf.com/essn.html

 Steve Spence wrote:

watt

Steve Spence
Dir., Green Trust, http://www.green-trust.org
Contributing Editor, http://www.off-grid.net
http://www.rebelwolf.com/essn.html

 

Nope it would be 4.8 amps @ 12 volts = 57 watts, the rest is wasted as heat.

Now of course if you had an MPPT controller it might be 5.8 amps @12 volts =
70 watts

Forget getting the full 85 into your batteries.

NM

 ~~NoMad~~ wrote:

My chargemate disagrees with you. I show a full 7.5 amps coming in from
my 90 watt quadlams, at 13.8 volts.

--
Steve Spence
Dir., Green Trust, http://www.green-trust.org
Contributing Editor, http://www.off-grid.net
http://www.rebelwolf.com/essn.html