HP 12-cell Lithium-Ion Extended-Life Battery for Pavilion dv2000, dv6000, Presario V3000, V6000 Notebooks - Maximize your battery life for more games, videos, music, and photo viewing without having to plug in your AC adapter. An additional 12-cell battery doubles your notebook's capacity compared with the power you get from a standard 6-cell battery. This Smart Lithium-Ion battery works with your notebook to reduce power consumption.