DESC: You can't take pictures with your digital camera if the battery doesn't have any power. Because some cameras rely on the LCD display for viewing and selecting some settings, it can be somewhat of a drain on the power supply. Replace your old battery with a high-power Lithium Ion battery, specifically for the Canon PowerShot S30, S40 or S50 digital camera. It assures power when you need it and recharges over 1,000 times.This battery is memory-free (will not reduce the usable power of your battery over time) and charges in the same charger as the original battery that came with your camera.