Our Minuteman E500 Battery is comprised of a high-rate discharge battery specifically designed for use in UPS back-up systems. This is not a general purpose 12V 5AH battery sold by most battery retailers, this Minuteman replacement battery is a 12V 5AH AGM HR series SLA that is tested using Midtronics equipment in order to guarantee that OEM specifications are met and surpassed. The Minuteman E500 battery replacement is fully charged and tested prior to shipment to ensure you the highest quality possible, and comes standard with High-Tech Battery Solution's unbeatable two year no-hassle warranty. All HR sealed lead acid batteries purchased from High-Tech Battery Solutions are designed specifically for the deep-cycle stand by use associated with all Minuteman battery backup systems.