There is no other place on the internet to get two replacement batteries for a Canon PowerShot S410 Digital Elph at this price! The two batteries have longer working time than the OEM battery that came with my camera (1500 mAh vs. 840 mAh). I charged both batteries as soon as I received them, and I haven't had any trouble. I finally put the second battery in and recharged the first, but only after many long hours of use. If these batteries continue to work as well as they have these first few weeks, this will be my best Overstock bargain ever! What a great value for the money and a great way to extend the life of my camera. Well worth the purchase price!!