Unfortunately, the first battery I received had a defect and not invited to my negative review towards contacted me the next day then immediately the customer service via email and offered me the send to a new Exchange-batteries, free of charge.
I then took advantage of the new battery and there was 1 day later! Behold: He worked too! Wunderbar!
Conclusion:
Quality and customer service are absolutely unbeatable for this price! The contact is friendly and accommodating, as some providers you will learn a lot.
I'll be back!