The battery can Miniladen in this charger or as the originals in S4 - everything properly.
In sharp contrast to the also here bought from Amazon "Samsung NFC / LTE 1900mAh Battery for Galaxy S4 Mini - Black" (from Online2013, allegedly also original Samsung battery), which allowed no charge indicator - you've never seen, if and when they for were full, lt. a Samsung developer was probably at least the batch purchased by me defective September 2013 (see my review local).
So - buy here, not the other batteries.