Just received my battery for Toshiba Satellite c650; the old battery provoked a "replace battery" battery from the taskbar. The new one arrived within 48 hours with the free delivery, it has been fully charged (in next to no time) and gives an estimated 3 hours life even in high performance mode. In power saver mode, I will supposedly be getting over 4 hours which is a huge improvement on the hour long lifetime of the old battery! Very pleased with this purchase and would highly recommend.