Mixing panels - Why not?

[Bikerz]

Hi all

Ive been lurking on here reading for a while now. I have access to free cable and batteries (Dont ask, its legal).

So I was going to do an off grid system with a few panels (house has a south facing roof overlooking fields so no shade etc.... I was going to get a charger controller MPPT and charge the batteries during the day and use through an inverter to run a few things at night. 24V system setup.

I read on here you shoudnt mix panels, but can I ask why? I have a friend running 2 different panels through one charge controller at 12V just fine (well he thinks its fine and been working for many years on his boat).

Cheers

 

[Gavin A]

if they've got the same characteristics, voltage, ampage, voltage curve etc then it's not an issue. The more difference there is between the panels, the worse the performance will be.