- Update: After I wrote the foregoing review, I was very pleasantly surprised by Mumbi. I got a second charger as replacement. This is still not quite perfect, but but my review was read and it was immediately responded that I evaluate positively. It is really been working to satisfy its customers, which, unfortunately, is too rare. I am delighted that my review was not only read, but it was assumed directly and was accordingly taken care of the problem. Accordingly, I can evaluate the value for money with 5 stars, but a point deduction, because it still does not sit quite perfect firm. Nevertheless I will engage if necessary on mumbi back.