I have properly charged the battery before first use defined (according to the manual 12 hrs. Charging time when the battery is 3.7 V and 1000 mAh capacity!) And then first again for less than a week apart. When I wanted to cut or shave the hair, the battery was drained after about 30 seconds that the unit is unceremoniously stopped. Of necessity I have thus operated the machine as a network device, but even on the cable the speed and power of the engine is absolutely not suitable to achieve a reasonable result in an acceptable time.
Conclusion: I'll send the device back to Amazon and look around for something Wertigerem.
