A27 E27 Batteries
Measuring 28mm high and 7.7mm around (diameter), the A27/E27 battery weighs approximately 7g and has a capacity of about 19mAh to deliver performance that far exceeds that of a comparable zinc battery. These non-rechargeable batteries are noted for having an extended shelf life, allowing consumers to stock up on A27 E27 without compromising the life of the battery.
The A27 battery is commonly used in keyfob remote controls, wireless alarms, cigarette lighters, GPS devices, utility meters, and photographic equipment which requires a high pulse current.