Almost equal 12v panels

[frankz66]

Hello everyone, being inexperienced I wanted to ask:

I have a string in series of 4 12v monocrystalline panels with the following characteristics :

Technical Data] Rated Power (Pmax): 180W -- Max Voltage (Vmp): 19.10V -- Max Current (Imp): 9.43V Current (Imp): 9.43A -- Open Circuit Voltage (Voc): 23.20V -- Short Circuit Current (Isc): 9.99A -- Max System Voltage: 1000VDC System Voltage: 1000VDC --

I have seen on offer of 170watt panels so 10 watts less with the features attached in the photo.

If I wanted to mass-proize these other two 170-watt panels being the VOC tolerance and ampere do I do well or do I buy two other identical 180-watt panels?

 

[SamDeleted]

The specs line up closely,the panels will work together OK

Do not worry

 

[frankz66]

The specs line up closely,the panels will work together OK

Do not worry

Thanks for answering, practically the difference is really minimal as the VOC of 180 watts is 23.2 against 23 of 170 watts and amps 8.95

 

[Crowz]

I agree they should work pretty well. All you have to look for in series is the amps. Volts are added so amps are the key.

 

[Sharing Society]

I've seen quite a few systems with various panels.
My rule of thumb is if Voc is within 10% (and that changes A LITTLE) with age.
Then you're good.

I saw a Voc different of about 20 to 30% and it caused an inefficiency (loss) about 25%.
This one parallel sets at a different Voc - it wasn't mix and matched in series.
Series should have a greater effect.