There are steps you can take to prolong the life of your battery when away from the home or office. You can conserve battery power by using your computers power saving features and closing down applications when not in use. However, even the advanced technology lithium-ion batteries wont last forever, so its best to have a spare battery on hand, just in case. Our Toshiba Satellite A70 P3383 battery is built to the manufacturers specifications and will perform just as well as the original battery, but we offer it at a lower cost. This high quality battery is designed for the Toshiba Satellite A70, but it will also work with other models. See product pages for the full list of compatible computers. This battery will operate for 2-3 hours with normal usage without requiring a recharge.