Dell Inspiron 630M laptops were the king of the hill in terms of battery life for budget notebooks in 2006. These computers could use six-cell batteries that lasted about four hours before needing to be plugged into the AC charger. Laptop users who had a nine-cell battery installed could use their Dell Inspiron 630M for a whopping seven hours before the battery ran down. With these battery life specs, these Dell laptops are keepers. If you need to replace your nine-cell memory for this device, or if you want to upgrade from six-cells to nine-cells, USB Phone World is your home for low cost, high-quality replacement batteries. These lithium ion batteries are 11.1V, 7200mAh capacity devices that can be used in Dell Inspiron 630M and 640M laptops. Our batteries are new and are 100 percent OEM compatible. Additionally, they are guaranteed to meet or exceed OEM specifications. These laptops are perfect for business and travel as they are light with a weight under six pounds. The long battery life will allow you to complete many hours of work or watch several DVDs without needing to worry about finding an AC outlet.