Knowledge Base

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Subject Charge Controllers
Author Sascha Deri
 
 
> I have 4 solar panels 2 are 80 watt and 2 are 60 watt. They are all 12 volt.
> I understand about series wirering but need charge controllers for these. May
> I wire these separately to the same batteries with 2 different controllers
> and if so what controllers do you suggest? By the way I am using a DR3624
> inverter, a TraceTM 500 meter.

Hello,

Yes it is fine to run each pair of panels separately to the batteries with their own charge controller and their own disconnect. However, you do not have to do that if you do not want to - it is okay to wire dissimalar panels in parallel with each other. So, you can put the two 60 watters in series with each other which will add up to 24 volt and put the two 80 watter is series with each other and then parallel the two pairs. This is how you would wire four panels to 24 volt even if they were all four the same panels.

If you do not want to do this for some reason then you will have to use one

Morningstar Sunsaver-20L 24V (http://www.AltEnergyStore.com/cart/1003.html)

charge controller for each pair of panels since that is one of the smallest 24 volt charge controller we have, but not too small.
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