Farm Pond Solar Install

[rmh1675]

I have a new 1 acre farm pond that I need to run an aerator compressor and solar is currently my best option. The compressor is a 1/2 HP 120v system. Specs show 420W and 3.5 amp draw. What I have purchased so far: (2) 200W BougeRv Panels, solar controller, 1000W inverter, and (2) 100ah deep cycle batteries. I keep getting frustrated with the math, so here I am for some help before I attempt to get everything put together. Do I need to get any more batteries or panels? Do I need to wire panels and batteries in series or parallel? I just need to run the compressor enough hours to turn over the water some and help oxygenate more of the water and help unwanted plant/ algae growth so probably not 24/7.

 

[Mattb4]

What you have;

400W worth of panels likely peaking at 300W output.
A 1/2 hp pump with run current at 420W, 3.5a with a starting surge perhaps 3 X 3.5a or 10.5a at 120vAC or 1260W Total anticipated kWh? Not specified or calculable without hours of use.
A 1000W inverter no voltage or model given.
2-100ah batteries (12vDC?)
A SCC (no specs given at all)

Problems;

On the face of it your panels lack enough power to run the pump.
The batteries, if 12vDC, have 2400wh max since they are likely lead acid you only want to use 50% or 1200Wh. This would power pump for ~3 hours.
Charging the batteries backup at 300W would take ~4 hours, or an average solar day if no other loads are being drawn.
The inverter at only 1000w may go into overload attempting to start pump.

Just at a rough calculation I would guess that you need to run the pump 12 hours a day. 12h X 420W= 5040wh I would also think you will need a larger inverter perhaps 2000W. Panels necessary to do this will be around 1000W worth. Battery capacity should be 300-400ah.

 

[rmh1675]

What you have;

400W worth of panels likely peaking at 300W output.
A 1/2 hp pump with run current at 420W, 3.5a with a starting surge perhaps 3 X 3.5a or 10.5a at 120vAC or 1260W Total anticipated kWh? Not specified or calculable without hours of use.
A 1000W inverter no voltage or model given.
2-100ah batteries (12vDC?)
A SCC (no specs given at all)

Problems;

On the face of it your panels lack enough power to run the pump.
The batteries, if 12vDC, have 2400wh max since they are likely lead acid you only want to use 50% or 1200Wh. This would power pump for ~3 hours.
Charging the batteries backup at 300W would take ~4 hours, or an average solar day if no other loads are being drawn.
The inverter at only 1000w may go into overload attempting to start pump.

Just at a rough calculation I would guess that you need to run the pump 12 hours a day. 12h X 420W= 5040wh I would also think you will need a larger inverter perhaps 2000W. Panels necessary to do this will be around 1000W worth. Battery capacity should be 300-400ah.

Batteries are Power Queen 12V 100Ah Lithium.

Inverter is just an amazon foreign 12V to 110V. https://www.amazon.com/gp/product/B0927P7P66/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

Solar controller https://www.amazon.com/gp/product/B08NFSCZ4V/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

 

[Mattb4]

OK.
The batteries being LiFePO4 mean you can get close to the rated amp-hour from them without damaging them.
The linked SCC is not worth having.
The linked inverter is of poor quality and will not last for day in and day out operation even if it can start the pump.

 

[rmh1675]

So if I get another 2 panels and 1 or 2 batteries, a better controller and inverter.... Do I wire those panels and batteries in series or parallel.

 

[efficientPV]

Where are you located? You can't freeze lipo batteries.

 

[rmh1675]

Where are you located? You can't freeze lipo batteries.

Central Indiana. They Will be in an insulated and exhausted/ vented with fan structure I built for the pump and batteries.