Shunt

[grizzley]

Hi,
I am looking for some guidance in regards to buying the right shunt.  I have an off grid system with two Classic charge controllers and would like to upgrade my shunt so I can also use the Wizbang Jr to further improve my Classics ability to charge the system.  Maybe I overlooked it but I could not find any information as to how to choose the right shunt.  Can someone enlighten me?

I have a 48V 420AH battery bank
2 Classic 200 controllers
2 Magnum MS-PAE 4448 inverters

Thank you

[WizBandit]

http://www.midnitesolar.com/productPhoto.php?product_ID=101&productCatName=Accessories&productCat_ID=5&sortOrder=9&act=pc

[grizzley]

Thank you

[ClassicCrazy]

Or this one - same as midnite one
https://www.solar-electric.com/mkb-500-50.html

Larry