Tripp Lite BP24V15RT2U 24VDC UPS External Battery Pack for Select Tripp Lite UPS 2URM<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Offers extended-run UPS operation when used in conjunction with compatible Tripp Lite UPS systems </span></li><li><span class="a-list-item"> Supports stacking or rackmount installation using only 2 rack spaces (2U) </span></li><li><span class="a-list-item"> Includes heavy gauge cabling with high current DC connectors for simple installation </span></li><li><span class="a-list-item"> 2 year warranty </span></li><li><span class="a-list-item"> Note， limit of one BP24V15RT2U per UPS </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31r9eWcwXnL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31s5iUY%2BoJL.jpg" noproxy>