Why does my iPad only charge on my iMac and not a cube

[iMore Question]

I went through all the steps to reboot the iPad and it's still only charges on the iMac and not through power ports for cubes

 

[Just_Me_D]

What are "power ports for cubes"?

 

[kch50428]

by ''cube' do you mean iPhone charger? Or what??

 

[Just_Me_D]

Is this what you're referring to?

 

[HankAZ]

I went through all the steps to reboot the iPad and it's still only charges on the iMac and not through power ports for cubes

iPad needs 10W or 12W charger blocks. The 5W charger block won't cut it.