If you use your Mobius in very hot conditions with external power, for example as a dashcam, you should consider replacing the battery with a Super Capacitor. A Super Capacitorenables the Mobius to correctly save the last recording when external power is removed. A fully charged Supercapacitor has enough energy to keep the Mobius (Real Time Clock) running for several days with out external power connected. It only takes a few minutes to fully charge the Supercapacitor.