The LR23 battery is a type of battery primarily used in electronic radio control systems such as keyless entry systems, home security systems, garage door openers, and Bluetooth headsets. An LR23 battery is cylindrical, smaller than a AAA battery, measuring 28.5 mm (1.1 in) long and 10.3 mm (0.4 in) in diameter, with a typical weight of 8 grams. An LR23 battery is an 8-cell device with a nominal voltage of 12 V. The higher voltage is required for radio frequency transmitting and receiving devices than for batteries. It has a capacity of approximately 55 mAh. LR23 batteries are constructed of 8 individual LR932 alkaline batteries in a housing. The LR23 battery is similar to the N battery, which has a voltage of 1.5 V.