eForCity Replacement Canon NB-4L Compatible Li-Ion Battery eForCity Replacement Canon PowerShot SD200 / SD30 / SD300 / SD400 / SD430 / SD450 / Digital IXUS 50 / Digital IXUS 40 / Digital IXUS 30 / Digital IXUS Never run out of battery power when you're just about to capture the perfect moment! Time to get extra power for your digital video camera/camcorder. High capacity, rechargeable DC 3.7V Li-Ion Battery technology gives the best performance possible compared to other battery technologies such as Nickel Metal Hydride (Ni-MH). Best replacement for the original NB-4L 9763A001AA battery pack.