When power failures occur, the runtime of any UPS system is determined by the condition of its batteries. Eventually, all batteries will deteriorate to the point where either the load is no longer supported, or the desired runtime is no longer available. As an alternative to investing in a new UPS system, Tripp Lite offers a complete line of Replacement Battery Cartridges (R.B.C.) that will extend the operating life of older UPS systems. By replacing depleted batteries, you not only restore your UPS system to its original runtime, but in many cases surpass its original runtime performance due to the superior quality of Tripp Lite replacement batteries. In addition, only Tripp Lite Replacement Battery Cartridges offer the superior compatibility and performance that the expertise of a UPS industry leader can deliver.