Need a new battery for your laptop? This Replacement Li-Ion battery is for Dell Inspiron 1100 series laptops / notebooks. This battery works well as either a replacement for your original one, or as a spare battery for when you are traveling. Why be limited by power? There is nothing worse then having your notebook die when you need it the most. A spare battery is also great to extend the usability of your laptop since with two you can charge one battery while using another.