No need to replace the battery. Battery Capacity of Hearing Device: 48mAh. Input Noise: ≤26dB. TypeHearing Aid. Battery Capacity of Charging Case: 1000mAh.
Bluetooth Rechargeable Digital Hearing Aids Sound Voice Amplifier Behind The Ear
Bluetooth Rechargeable Digital Hearing Aid Adjustable Voice Amplifier Ear Sound
ELICTECH Rechargeable 312 Hearing Aid Batteries and USB-C Charger with 4 Pack Silver-Zinc Cells, Long Lasting Power for Bluetooth & Non-Bluetooth Hearing Aids, Portable Compact Case (2pcs-13)
ELICTECH Rechargeable 312 Hearing Aid Batteries and USB-C Charger with 4 Pack Silver-Zinc Cells, Long Lasting Power for Bluetooth & Non-Bluetooth Hearing Aids, Portable Compact Case (4pcs-675)
