Sonnet today unveiled a new line of high-capacity replacement batteries for first through fourth-generation iPods, as well as iPod minis. Replacement batteries offer up to 78 percent greater capacity over original batteries, allowing play-times to exceed 20 hours. All supplies and required tools are included, as well as an instructional video that can be played in English, French, German, and Japanese. Replacement batteries for first and second-generation iPods are priced at $40, while all other replacement batteries are priced at $30. The batteries are expected to be available in November.