Otological device i.e. hearing aid, for producing acoustic warning signal, has measuring device for measuring charging condition of electrical energy source depending on electrical charge extracted from energy source

摘要

The device (1) has a measuring device that is indirectly connected with an electrical energy source (4) i.e. battery. The measuring device is provided for measuring a charging condition of the energy source depending on an electrical charge extracted from the energy source. The measuring device has an electrical measuring resistor (R) that is provided in a consumption current path, for measuring the electrical charge.