Solar Kit
Just received my kit. 2 100w panels with a 30a pwm controller. Hoping it will recharge my 2 GC2's. I am alone in the trailer and power use is min. Any thoughts?
Forum Discussion
What is the Isc and Voc of your panels? I see the controller has Voc intake limit of 42v. That is normally not enough for two 12s which have about 22Voc each, so it is curious. (Relates to the same "issue" with the Eco-Worthy MPPT controller)
Specifications
Renogy 100W Polycrystalline Solar Panel
Maximum Power: 100W
Optimum Operating Voltage (Vmp): 17.8V
Optimum Operating Current (Imp): 5.62A
Renogy 30A PWM Charge Controller
Rated Charge Current: 30A
Max. Solar Input Voltage: 42V
Max. PV Input Power: 360W (12V), 720W (24V
(BTW it is really stupid to list the panel Vmp and Imp when it is a PWM set-up that could care less about the maximum power point! You want the Isc rating.)
On your results, they look good. You would see Isc of the moment, so the way to check your set- up is to get the Isc of the moment at the panel, then at controller display of amps. Should be the same.
If the batts are full and you have loads running, the amps to the battery will not be the same. Some amps will go to load first, then whatever is left over goes to battery.
What I like to see, is with the sun high and the panel aimed, to get rated Isc. Then with thirsty battery, to see battery accepting that many amps. However that just shows the panel can do its rating. All you need to see to know the set-up is good, is to compare the Isc of the moment (usually less than rating except at high noon, panel tilted South) with the amps at the controller to see they are the same, so no losses anywhere along the way.
Specifications
Renogy 100W Polycrystalline Solar Panel
Maximum Power: 100W
Optimum Operating Voltage (Vmp): 17.8V
Optimum Operating Current (Imp): 5.62A
Renogy 30A PWM Charge Controller
Rated Charge Current: 30A
Max. Solar Input Voltage: 42V
Max. PV Input Power: 360W (12V), 720W (24V
(BTW it is really stupid to list the panel Vmp and Imp when it is a PWM set-up that could care less about the maximum power point! You want the Isc rating.)
On your results, they look good. You would see Isc of the moment, so the way to check your set- up is to get the Isc of the moment at the panel, then at controller display of amps. Should be the same.
If the batts are full and you have loads running, the amps to the battery will not be the same. Some amps will go to load first, then whatever is left over goes to battery.
What I like to see, is with the sun high and the panel aimed, to get rated Isc. Then with thirsty battery, to see battery accepting that many amps. However that just shows the panel can do its rating. All you need to see to know the set-up is good, is to compare the Isc of the moment (usually less than rating except at high noon, panel tilted South) with the amps at the controller to see they are the same, so no losses anywhere along the way.
