Why would hdr 130 headphones reception quality get bad.

SOURCE: NO SOUND HDR 130

Try to remove the batteries and at the same time unplug the power of the base for at least 30 sec. then replug and reinsert the batteries. That did the trick on mine.

SOURCE: Bad battery for my Sennheiser HDR 45 headphone

A replacement battery can be purchased from Sennheiser for $20.00.

Battery is: BA 151

Sennheiser Link:
http://www.sennheiserusa.com/newsite/productdetail.asp?transid=004146

SOURCE: Bad battery

A replacement battery can be purchased from Sennheiser for $20.00.
Battery Part Number: BA 151
Sennheiser Link:
http://www.sennheiserusa.com/newsite/productdetail.asp?transid=004146

SOURCE: My cordless HDR 130 Sennheiser headphones no

The batteries are at end-of-life OR your charger has failed.

Forst replace the batteries... they are MOST likely bad. Charge the new ones before using.

SOURCE: sennheiser hdr 120 headphones no longer hold a

Twist the pad counterclockwise on the left earpice. You'll find the batteries underneath.