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Motorhome Facts :: View topic - Mixing solar panels of (slightly) different voltages?
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Motorhome Facts Forum Index » Parts & Accessories » Solar Panels » Mixing solar panels of (slightly) different voltages?
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 Mixing solar panels of (slightly) different voltages?
636996 Post Posted: Mon Jun 01, 2009 6:39 pm Thank this member for this postReply with quote Back To Top

pieterv Subscriber 05/03/2013 


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Anyone know if it is OK to mix panels of slightly different voltages:
one is 40W with Voc=20.5V and Vmp=16.9V
other also 40W with Voc=22V and Vmp=17.5V.

Can I wire those in parallel? How would they affect one another?

Grateful for any advice,

Pieter
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637066 Post Posted: Mon Jun 01, 2009 8:33 pm Thank this member for this postReply with quote Back To Top

sallytrafic Subscriber 26/01/2013 


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In my experience that would be fine the range of Voc output from panels of identical nominal specification is often wider than that.

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637074 Post Posted: Mon Jun 01, 2009 8:43 pm Thank this member for this postReply with quote Back To Top

pieterv Subscriber 05/03/2013 


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Thanks for the info, Frank.
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637128 Post Posted: Mon Jun 01, 2009 9:42 pm Thank this member for this postReply with quote Back To Top

sallytrafic Subscriber 26/01/2013 


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The only problem might come with a maximum power point tracking (MPPT) regulator but I guess it would find a happy medium Smile

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637146 Post Posted: Mon Jun 01, 2009 10:09 pm Thank this member for this postReply with quote Back To Top

pieterv Subscriber 05/03/2013 


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sallytrafic wrote:
The only problem might come with a maximum power point tracking (MPPT) regulator but I guess it would find a happy medium Smile


No, it has a PWM regulator.
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