Correction:
As also indicated in the instructions for use, batteries are even recognized.
As a car battery 12V, 12V motorcycle battery, battery 6V.
Will you now manually switch to a different mode, eg from "Auto" to "motorcycle" to charge the battery friendly,
you have the possibility during the first 5 seconds the mode switch.
(Conversely, if you want a motorcycle battery in auto mode load faster)
If as described here, a 12V battery to be recognized as 6V battery (which was never the case with me)
one would have during the first 5sec. just manually set the mode to 12V Switch .... done!
In addition, with me all the way were deeply discharged or defective batteries properly recognized as such.
Conclusion: the device does exactly what it is and what it promises,
for application failure of the user, the device can not help it.