Why can I not use rechargeable batteries on my Active Noise Cancelling headphones?
Rechargeable batteries do not supply the full voltage of the equivalent alkaline or lithium battery. The Active Noise Cancelling headphones require the full voltage of an alkaline battery which gives the ATH-ANC7 headphones a battery life of 40 hours and the ATH-ANC3 headphones a battery life of 50 hours.
