The Tripp-Lite SM750XLNAFTA battery replacement kit is shipped fully charged and tested to ensure you the highest quality possible and comes standard with High-Tech Battery Solution's unbeatable two year no-hassle warranty. All sealed lead acid batteries purchased from High-Tech Battery Solutions are designed specifically for the deep-cycle stand by use associated with all Tripp-Lite battery backup systems. Our batteries are of the highest quality on the market and are guaranteed to perform to or surpass OEM specifications.