ZeniPower Hearing Aid Batteries are built to last for a long time, over continuous use. ZeniPower (Zhuhai Zhi Li) Battery Co., Ltd. is the ONLY zinc air button cell battery manufacturer in China. Hearing aid batteries using zinc-air technology ensure fewer battery replacements for your hearing aid devices. The button-like batteries range in sizes A10, A13, A312, A675, and A675P. With ZeniPower hearing aid batteries you can expect clear tones, less distortion, fewer volume adjustments, and longer service life.