These Duracell DL/CR2032 lithium coin cell batteries are used in a wide variety of devices that use a 3 volt power source, such as electronic key fobs, laptop clocks, motherboards and scientific instrumentsLithium batteries are highly suited to these types of application; their construction means they are guaranteed not to leak, helping to protect sensitive electrical circuitry. These batteries have an extremely high charge density; this means that they have a high life span that compares favourably with the size of the unit. This makes these batteries a suitable power source for active shutter 3D glasses; the cell provides enough power to prevent ghosting and flickering, whilst the modest 6 gramme weight means the glasses will still be comfortable. These batteries .