Hello there.. And thank you for helping with my problem. I am new to solar and am trying to put together a small system for my travel trailer. Mostly to keep the batteries fully charged during a weekend of boondocking.
Here is my current setup.
2 x 100 watt ETFE flexible solar panels..
Panel specs: 100w., open voltage 21.2, vmp 17.6V. Imp 5.68A
Victron smartsolar mppt controller 75/15
2 x brand new 6 volt rv batteries.
20 amp breaker between controller and batteries.
Here is the issue I am having. All testing done around noon in fully sunny skies, with not haze or cloud cover.
During testing of these panels, if I connect either single panel to the controller, and to the batteries.. The result isnt far off the specs for the panel. Around 70-85 watts, 16.5V +/- 1 , 4.5-5.1 amp to the controller. ( based on the victron controller readings.).
The problem lies when I connect the panels together In series to the controller. I end up with 68 watts 35-37V. But only 1.6-2.0 amps. To the controller.
I understand the voltage seemingly is correct, but should the watts not be up around 150-175 or hugher, and the amps not be around the same 4.5-5.5 range?
At this point it is better to have just a single panel connected as the amps stay up around 4.5+ range
Please help me!
Here is my current setup.
2 x 100 watt ETFE flexible solar panels..
Panel specs: 100w., open voltage 21.2, vmp 17.6V. Imp 5.68A
Victron smartsolar mppt controller 75/15
2 x brand new 6 volt rv batteries.
20 amp breaker between controller and batteries.
Here is the issue I am having. All testing done around noon in fully sunny skies, with not haze or cloud cover.
During testing of these panels, if I connect either single panel to the controller, and to the batteries.. The result isnt far off the specs for the panel. Around 70-85 watts, 16.5V +/- 1 , 4.5-5.1 amp to the controller. ( based on the victron controller readings.).
The problem lies when I connect the panels together In series to the controller. I end up with 68 watts 35-37V. But only 1.6-2.0 amps. To the controller.
I understand the voltage seemingly is correct, but should the watts not be up around 150-175 or hugher, and the amps not be around the same 4.5-5.5 range?
At this point it is better to have just a single panel connected as the amps stay up around 4.5+ range
Please help me!
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