I bought my unit because I more often - especially since Android 5, although the news announce something else - stand there with an empty battery. Although I also have a "thick battery" with 7500 mAh, but that's something clunky for normal use.
So I have now the possibility to use a second battery and load these outside the smartphones. Even the 7.500mAh battery fits into the unit, as this is kept flat, which corresponds approximately to the shape of the battery compartment. The loading capacity is 600 mAh rather poor.
During charging, a purple LED lights, after the end of the same blue. When changing the battery, you should wait einn few minutes, as the unit to change not noticed and therefore not begins to load otherwise.
Works.
