I noticed that after firmware upgrade (I think to 8.00) Edge 1030 doesn't show low battery warning anymore. Before that when battery reached level under 10% - Edge gave warning and was asking about turning on battery save mode. I ride many long distance rides so I lack of this function is irritaiting because I sometimes forgot about monitoring battery and it is dying. But low battery warnings for sensors are working, at least for power meter, in other sensor I haven't depleted battery so low.