Back up Samsung Impression battery is a much needed necessity and you do not want to be without power for your Samsung Impression . A spare Samsung Impression battery will ensure that you are always prepared. It can extend your talk time and reduce worry about dying Samsung Impression battery life if you are on a long call or listening to music. It's also great for safety on long trips especially when your Samsung Impression battery is dying and there is no charger around. A spare Samsung Impression battery that is charged and ready to go will do the trick.