Tripp Lite 12 VDC UPS replacement battery cartridge helps to enhance the battery performance of old UPS systems. Cartridge meets the specification of original manufacturer.Tripp Lite 12 VDC UPS replacement battery cartridge with its unique design upgrades the performance of UPS systems suffering from expired or weak internal batteries. Reusable battery cartridge is compatible with numerous UPS brands and models. Rechargeable battery cartridge has an operating temperature range of 0 to 40 deg C and takes around 4 hrs to get recharge.12V DC. 1 replacement battery. Specifically designed for high rate UPS discharge applications, where high power output is required. Battery Life: 3 years to 5 years. Package Contents: Replacement Battery Cartridge 51 12 volt UPS replacement battery cartridge, Instruction manual with installation, recycling and warranty information. Dimensions: 3.69" Height x 2.5" Width x 5.88" Depth. Standard Warranty: 18 Month. Battery Type: Maintenance-free Lead Acid. Has storage temperature of 5 deg F to 113 deg F, operating temperature of 32 deg F to 104 deg F & 0 to 95percentage non-condensing relative operating humidity. Contains replacement battery cartridge 51, 12 V UPS replacement battery cartridge and instruction manual for your peace of mind. Comes with 18-months warranty.