900mah Eurus Li-Ion NB-4L / NB4L Battery for Canon Digital PowerShot SD450 SD600 SD400 SD300 SD200 Digital IXUS 30 40 50 55 IXY Digital Camera 100% new, rechargeable NB-4L battery replacement 900 mAh High Capacity Over charge protection, battery life microchip built in Li-Ion, no memory effects. Super Long Life with Each Charge, 15-20% More Pictures & Flashes.