Long-lasting Battery KEND A675 1.45V Hearing Zinc Air Battery Disposable Portable Batteries

Long-lasting Battery KEND A675 1.45V Hearing Zinc Air Battery Disposable Portable Batteries

KEND A675 1.45V Hearing Zinc Air Battery

► Brief Introduction

KEND A675 1.45V Hearing Zinc Air Battery is a disposable zinc-air button battery designed for high-power hearing aids and is a medical-grade consumable. The battery model is A675, which is the largest capacity and longest battery life among hearing aid batteries. Its core function is to provide stable power support for devices such as behind-the-ear hearing aids and cochlear implants. The battery voltage is 1.45V, and the typical capacity is 630-660mAh (slightly different for different brands). It can support the continuous use of the device for 7-20 days, depending on the power consumption of the device (such as Bluetooth connection, noise reduction function turned on). The round button battery with a battery diameter of 11.6mm and a thickness of 5.4mm is the largest model in the series. The appearance of this series of batteries is similar. In order to distinguish them, the manufacturer made them into batteries of different colors, A10 yellow, A13 orange, A312 brown, and A675 blue.

► Clinical application and adaptation scenarios

1. High-power behind-the-ear hearing aids (BTE):

High-end models such as Phonak Naída and Oticon Opn S have high power consumption due to built-in complex chips (such as noise reduction algorithms, multi-channel compression) and wireless transmission modules (Bluetooth, inductive coils). The large capacity of A675 can meet their all-weather continuous use needs.

Typical application scenarios: In noisy environments such as hospitals, schools, and factories, the equipment needs to continuously process high dynamic range sound signals. The stable voltage output of A675 can reduce the fluctuation of sound quality.

2. External cochlear implants (sound processors):

Such as the Australian Cochlear Nucleus series and the Austrian Med-El devices, the external devices of these devices have extremely high requirements for battery current stability. It is important to note the difference between ordinary A675 and 675P batteries for cochlear implants: the latter has a larger discharge current (30mA vs 20mA of A675), and mixed use may cause device performance degradation or damage.

3. Special needs equipment:

Bone conduction hearing aids: sound is conducted through the skull. Some models (such as Oticon Ponto) use A675 batteries to support long-term wear.

4. Binaural intercommunication hearing aids: such as the Phonak Sky series, which need to drive both the binaural device and the wireless intercommunication function at the same time. The battery life of A675 can avoid the inconvenience of frequent battery replacement.

► Parameters

► Product Picture

► Activation and dormancy

Activation process: Before use, tear off the anti-oxidation sticker (usually brown or yellow) on the top of the battery to expose the air holes. After oxygen enters, it reacts chemically with the metal zinc powder inside the battery, and the voltage gradually rises to 1.45V. This process takes about 1-2 minutes.

Dormant storage: Unused batteries need to keep the sticker and store in a cool and dry place (recommended humidity ≤ 60%). The shelf life can reach 2-4 years.