ADDENDUM:
After my bad review of the article setting me the seller a replacement charger or power supply has sent in place of the defective Mumbi-part without prompting. The reasoning was that it has come in spite of their own tests to defects in the product and they now deliver me for replacement. For getting the dealer: Cell Now - absolute from me 10 points. They are attentive, customer-oriented and I'm really excited and was looking forward so right! The new part is a little different and I'm not sure how far I can grab assessing it in here.
But as it comes to the Mumbi-charger here, I can not really make undo my review.