Laptop battery maintenance methods - 2, to minimize the use of this method gives the number of batteries I feel like some petty, but it is also the most effective. We should know that the battery charge and discharge frequency is directly related to life on one charge, the battery on a step forward to retirement. Suggest that you try to use an external power supply, use an external power supply when the battery removed. Some friends convenience, often several times a day Plug Power, and notebook computers equipped with a battery, to do so, even greater damage to the battery. Because each access to external power supply is equivalent to the battery charge time, battery life shortened by a naturally. Dell Inspiron E1405 battery          HP PB994A battery        Dell Latitude C600 battery