Answer to: My handset battery isn't charging. Where do I buy new batteries?Here is a link to a site where you can purchase a replacement battery. http://www.101phones.com/details/933/son...
Answer to: Where do I find the serial number?On the bottom side of the telephone base there will be a small outlined area with the device information. The model number is on the top line preceded by "MODEL NO." and then XXX-XXXX.