MD: mz-r55 battery

is there any replacement or alternate gumpack type battery avalible for the sony mz-r55 and where can i find it? the one supplied's life is only 4 hours on a full charge. - To stop getting this list send a message containing just

MD: magnetic damage

since mds are recorded w/ magnetic signals, can airport metal detectors or x ray machines cause damage to the info on md's? - To stop getting this list send a message containing just the word "unsubscribe" to [EMAIL PROTECTED]