METHOD, CHARGING SYSTEM AND COMPUTER PROGRAM PRODUCT FOR CHARGING A BATTERY OF A HEARING INSTRUMENT

A method for charging a battery of a hearing instrument is disclosed. The method may comprise obtaining () a discharge function as a relationship between a battery charge and a voltage of the battery. The method may further comprise obtaining () a desired runtime capacity to be achieved by charging the battery. The method may further comprise determining () a charging voltage taking into account at least the discharge function and/or the desired runtime capacity. The method may further comprise charging () the battery with the determined charging voltage. The method may improve battery longevity while at the same time ensuring that a desired runtime capacity is provided. Furthermore, a charging system () for charging a battery of a hearing instrument and a computer program product are disclosed.