Sony Walkman music players have evolved from cassette players to CD players to digital MP3 players. Like most MP3 players, the Sony Walkman relies on a rechargeable battery to power the device. Over time this battery can lose its ability to hold a charge and will need to be replaced. Savvy users can purchase a replacement kit and do the battery replacement themselves. Slowly move along the edges of the Walkman, while keeping the tip of the pry tool in between the side and backing, until the backing pops off. Writer Bio
