|Topic Review (Newest First)|
|03-03-2009 05:19 AM|
Originally Posted by 66luders View Post
How big is your batter bank?? BTW, 17 volts sounds a bit low for max voltage. You probably would have been better off with two 100 watt panels, rather than a 135 and a 65...
Also, are you sure it is only showing 15 AMP-hours, not 15 AMPS. What kind of battery monitor are you using. The Morningstar charge controllers probably only show AMPS, not amp-hours. A battery monitor, like a Link 10, would show AMP-hours.
|03-03-2009 04:49 AM|
|scottyt||the math is easy but real life is not, the math is amp = watts divided by volts or 200 / 14.5 or about 13.8. so thats what in a perfect world you get per hour. so either your banks are charged or you have a problem. do you have a dump on the controller ? you might want to try a night with out the charger and just let the panels do the work the next day and see what the meter says the next day.|
|03-03-2009 04:27 AM|
Daily amp hours for 200 watts?
I have two panels in parallel totaling 200 watts which feed a morningstar MPPT charge regulator. According to the meter I am only getting between 10 and 15 amp hours on a average day here in Hawaii. One panel is a kyocera 65 watt and the other is a kyocera 135 watt. Both panels max voltage is around 17 volts... and they are in parallel.
The charge regulator is a three stage regulator and the voltage is usually around 14.5 volts for my wet cell batteries.
during the day I shut off the battery charger and all lights and fans, there is virtually no amperage draw on my batteries. So I am wondering if the batteries are fully charged and the regulator is only showing the amperage that the batteries are accepting.