RBC and SURBC Relplacement Battery Cartridges and Extended Battery Packs are for Uninterruptible Power Supply UPS Battery Backup systems from Tripp Lite which provide high-performance surge suppression and keep your electronic equipment running during a power outage. Wholesale Batteries Direct has the high quality factory fresh batteries that you want to buy at discount prices to replace the batteries in your TrippLite RBC or SURBC replacement battery cartridge or extended battery pack. We have the batteries you need for your UXBP48, UXBP24, 24XLBP, 48RMXLBP, 48XLBP, 24RMXLBP2U, 48R3XLBP, 4RM3XLBP3U and more. All of our batteries come with a full 1 year warranty. Be sure to save and re-use your existing cables and connectors, when you replace the batteries in your RBC, SURBC or Extended Battery Pack.