1. Apparently not all batteries are detected or "Error", zBConrad "energy" 2.500mAH, charging the old Voltcraft (should actually be scrapped) went against it. Even after charging was again "Error" appears. 2. Charging eneloop batteries goes fortunately. Vollgeladen- display missing leider.Der state is probably achieved if the upper beam only flash even when the display is still set to batch. Here there is no clear indication on the packaging, operating instructions separately: None