Abstract: In-the-ear type hearing aid has a rechargeable storage cell permanently connected and permanently situated within its shell, and a solar cell carried on its back plate and facing outward. The solar cell provides power to energize the hearing aid amplifier while the device is worn and also reenergizes the storage cell under average ambient conditions. The solar cell serves as a noise filter to reduce the background noise apparent to the wearer. A semi-transparent cover or door cosmetically conceals the solar cell while the aid is being worn, but permits some ambient light to penetrate to the solar cell. For recharging, the door can be opened for full exposure on to the solar cell. A combination storage and reenergizing case is provided for the hearing aids.