It seems 1,2V accus is not enough

[makakken]

Hey there, if you use the PaperL with 1,2V accus, it only takes some days until it's frozen with a half-switched image. When i take my Paper7 i can see in the battery case is written 1,5V, but not within the battery case of PaperL. Could you write this anywhere? Battery-Holder? Documentation? I'm sure i'm not the only one having this problem...

[smarthomeagentur]

The Software minimum is defined with 4200mV. Charged NiMh should work fine. The 1.5V Label is not changable for the part but we could consider putting it with the Laser? @Utzel-Butzel