In order to prolong the dell inspiron mini 10 battery, please pay close attention to battery maintenance. Rechargeable battery will undergo self-discharging when left unused for a long period of time. Thus, it should always be stored in a 50% charging state and kept in a cool, dry and clean place. To maintain the optimum performance of a battery pack, it is highly recommended to cycle (fully discharging and recharging) it at least once a month. If the laptop runs on charger for dell inspiron mini 10, you may take out the dell mini 10 battery.