The Canon BP-514 is a rechargeable lithium-ion battery designed to power a range of Canon cameras and camcorders, including EOS Digital Rebel, PowerShot G2 and G5 models, and Optura and ZR series camcorders. With 7.4V and 1390mAh capacity, this battery delivers reliable performance without the memory effect of older battery technologies. Unlike nickel-cadmium batteries, the BP-514 can be partially charged and discharged without compromising battery life, making it an ideal spare battery for extended shooting sessions. Its compact design and lightweight construction make it perfect for travel and on-location work.