Not used, at least in the WF-5620 Pro

Wanted I had an Epson compatible cartridge, which has an ink level that goes in the direction of 7891-94. This requirement was in the series offered up to 3 ml (black) met. The cartridges I found however at Amazon under the trade name T7911 (which would mean in black 14.4 ml, on the bill was but T7911, the capacity specified on the bill with 62 ml - which virtually the cartridge T7891 in stock equivalent).

It remains open, which has capacity for the delivered black cartridge (and the others) ?. Because on the cartridge itself is 7901. This I noticed, however, as now described only after complaint:

To my astonishment, the cartridge can indeed introduce into the slot of the printer, but the cartridge was no maintenance. Normal can be felt shortly before complete introduction as a resistance of a spring - for further introduction, the cartridge would then engage. No, they did not. To make sure it was not on the printer, I took the stored empty original cartridge and an existing compatible cartridge of another manufacturer and put both cartridges without problems (where the original cartridge snaps a little easier).

Schade eingentlich. Because I was interested especially if the cartridge offered actually displays the ink level. According to my information, it is so that over a patent not compatible cartridge ink levels (at least in my 5620) is expected to show. If so, I would have been happy animal.

If a user with these cartridges actually gets an ink level indicator, so it would imens important for interested buyer to know what printer you came to this, surprising for me result.