METHOD OF MANUFACURING A CHARGER INSERT PART FOR A HEARING INSTRUMENT CHARGER DEVICE

A method of manufacturing a charger insert part (40) comprising a holder (45) for holding a rechargeable hearing instrument (1A, 1B), which is individually customized for at least partly being inserted into an ear canal of a user, in a hearing instrument charger device (20) configured for charging the rechargeable hearing instrument (1A, 1B), the hearing instrument charger device (20) comprising - a charger casing (21) having a receiving portion (29) for the charger insert part (40) with a holder (45), and - a first charger element (22, 23) having a first position in the charger casing (21), the method comprising - providing, based on a dataset representing a shape of a portion of an ear canal of the user, a first virtual model of the rechargeable hearing instrument (1A, 1B) shaped to at least partly conform to the shape of the ear canal portion, including allocating a second position in the first virtual model of the rechargeable hearing instrument (1A, 1B) for an electronic hearing aid component (28) comprising at least a second charger element (4); - providing, based on the first virtual model, a second virtual model of a charger insert part (40) for insertion in the receiving portion (29) of the hearing instrument charger device (20), in which second virtual model the charger insert part (40) is designed to support the rechargeable hearing instrument (1A, 1B), such that the first charger element (22, 23) is positioned in a first relation with the second charger element (4), when the charger insert part (40) is placed in the receiving portion (29) of the hearing instrument charger device (20); and - shaping, by a 3D manufacturing process, the customized charger insert part (40) with the holder (45) based on the second virtual model.