1400Views4Replies

Author Options:

Can I connect different voltage solar cells in series? Answered

I have read that connecting different voltage solar cells in parallel could be an issue, but what if I want to connect them in series?

I have a larger panel of 21-24V, 15W and a controller with 2 solar panel inputs. I do not have enough space to put up another large panel, so I was thinking about putting a 13,5V and 4x2V cells in series.
Is this doable and a good idea? Any down sides to connecting them like this?

Thanks for your feedback & ideas in advance!
Balazs

Comments

The forums are retiring in 2021 and are now closed for new topics and comments.
0
Junk_Wizard
Junk_Wizard

11 years ago

I've been doing it for a while with random solar yard light solar panels, I don't have the technology required to test them (the patience mostly) But it seems to work alright.

0
suhajdab
suhajdab

Answer 11 years ago

Thanks! I will go ahead then!

0
Smokedasphalt
Smokedasphalt

11 years ago

It would ruin the efficiency of the larger solar cell, i guess.
I don't Know whether its do-able. But, you could try!

0
suhajdab
suhajdab

Answer 11 years ago

Luckily my controller has 3 solar connections (+ + -) allowing me to connect 2 panels separately. So I guess all lights are green :) Thanks for the input!