1. In the mode 'Discharge' is not only discharged but also automatically loaded again. The discharge capacity (= residual capacity) the battery is then no longer visible, because immediately the charged capacity is displayed when you switch to batch mode - ie starting from 0 mAh.
2. The small AAA-cells are a bit fiddly reinzubekommen because the minus contact tongues protrude only slightly out of the housing. With some practice, but it goes well and quickly.
3. The three lower buttons are apparently on a common key block / board. By pressing a button, move the others. Looks a little rickety. The pressure point of the keys is but ok.
4. A discreet permanent illumination of the display would be great.
Despite these minor limitations, there is a prima unit with great price / performance ratio. I would buy it again.
