Sony MDR-RF5000K - Manual (Page 13)

Preparation
13 US
Using the headphones with alkaline batteries
(sold separately)
Commercially available (size AA) alkaline batteries can also be used to power the
headphones. Install the batteries in the same manner as described in “Inserting the
supplied rechargeable nickel-metal hydride battery” (page 9).
When dry batteries are installed, the battery charge function is not activated.
Battery life
Battery Approx. hours* 1
Sony alkaline batteries 5 hours* 2
LR6(SG)
* 1 at 1 kHz, 1 mW + 1 mW output
* 2 Time may vary, depending on the temperature or conditions of use.
Notes on batteries
• Do not charge a dry battery.
• Do not carry a battery together with coins or metallic objects. Heat can be generated by the
battery if its positive and negative terminals are accidentally shorted.
• When you are not going to use the unit for a long time, remove the batteries to avoid damage
from battery leakage or corrosion.