This battery was bought a couple of days before going on holiday, so that i would not have to take the Sony HVR V1 camera's charger and it was as an addition to the battery provided with the camera. When it was fully charged the camera showed a use time of six and a half hours. The battery lasted all of the 11 day holiday and still had plenty of time left in it before requiring a recharge, so much time that i had no need to take the original as a spare. i took over two hours worth of video using this battery. Ok it is more expensive than a none Sony make, but you get what you pay for. With the video camera i have, i believe it is money well spent.