Don"t get caught using the wrong battery, get this Lithium-Ion Battery Pack. Use it with your Sony camcorder or digital camera for up to 3 hours. The built-in microprocessor will accurately calculate the remaining battery life (measured in minutes) so you"ll know when to shoot and when you need another battery. Features Don"t risk missing those once-in-a-lifetime shots. You will always know how many minutes of battery life you have left thanks to Sony"s AccuPower display. Plus because they resist memory effect, these genuine Sony batteries will not prematurely reduce your recording time.