However, the battery suddenly empty a few weeks ago. From the supplied unbranded battery you can not so much expect certain circumstances, inserted a new Varta. A few measurements. The next day, the battery icon appeared, and later it was empty. If you have given out the battery and wait a few hours, you could carry out at least 2-3 measurements. I then tried a whole new Duracell - even after a night (and 2-3 measurements) Replace the battery icon.
Am curious to see how the Complaining works. What I did not realize that this is "sold by Amazon" items from a store in the United States.
Update:
Must confess that I had something rashly and rated very skeptischt. In "sold by Amazon" items you have to contact the seller (not Amazon). I was a bit unsure if I was in the right place there, and also confused, because the seller (from the USA) no longer offer the product. However, the answer (in pretty good German) came very quickly. It was offered refunds or exchanges. I now get a replacement from the Amazon warehouse. Since a defective product can always happen, I changed the rating of 2 to 4. Wait, how does the replacement device.
Update after a few more months, I have the equipment currently in use is no longer so often. But it still works as desired.