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MPPT controller question

nalla1

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Feb 15, 2023
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California
I am constructing a 2,000 Watt system, consisting of 10 200 Watt panels connected in series-parallel.
Total voltage going into the charge controller will be 108 volts.
Total current will be 23 amps.

Will this Renogy 60A mppt controller work for my project?

I plan on using a 12V/300ah LiFePO4 battery.

Inverter will be 4,000 Watts - will this inverter work?:
 
I am constructing a 2,000 Watt system, consisting of 10 200 Watt panels connected in series-parallel.
Total voltage going into the charge controller will be 108 volts.
Total current will be 23 amps.

Will this Renogy 60A mppt controller work for my project?

"Max. PV Input Voltage: 150 VDC (25°C), 140VDC (-25°C)"

I plan on using a 12V/300ah LiFePO4 battery.

Inverter will be 4,000 Watts - will this inverter work?:

4000W out of 12V is absurdly impractical:

4000/12V/.85 = 392A

The 2awg battery cables provided with that unit are likely good for around 100A. You'll need marine grade, 105°C, 4/0 wire.

Your battery is likely rated for no more than 300A.
 
24v system is a minimum with that PV input and inverter load. 48v is prob more practical.
 
Hi Nalla and welcome.

The short answer is that you need some more work before you start buying things. Lots more to learn.
 
A couple of other items to learn about…

On battery:
>I plan on using a 12V/300ah LiFePO4 battery.

There are two different numbers you need to know about. Total amps and needed amp/hours.

The total amps is the largest amount you will draw at once. When you start a motor there is a surge (locked rotor amps). For example, in my rig, if I am using the toaster and then put something in the microwave, the inverter shuts down because I exceeded the available amps on the inverter. If the bms on that battery can’t supply the needed load to the inverter- it won’t run. So look at the continuous amps rating on the battery - you may need multiple batteries. Three 100a/hr batteries may be better than one 300a/hr battery.

The amp/hrs is how long the battery will supply an amp load.

Get really clear on your biggest loads and how long you will need them powered.

Good luck on your journey- keep asking questions!
 

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