BAT-HA13 is a 6 volt alkaline replacement battery made by Rayovac. It is commonly used in a variety of devices such as security systems, medical equipment, and appliances. This battery is designed with both high efficiency and long life in mind, making it a reliable power source for a variety of applications. It also has a patented voltage protection system to ensure maximum performance and protection of the device. This battery is fully sealed and maintenance-free, allowing for easy installation and regular use.