Ventev’s Lithium Battery Retrofit Kit is designed to replace the existing lead-acid batteries in our 48VDC UPS Power Systems. The kit includes the lithium battery and hook-up cables for a simple and easy conversion from lead-acid to lithium-based battery technology._x000D_  _x000D_  The retrofit battery is constructed of Lithium Iron Phosphate (LiFePO4) and is designed to provide up to 2 hours of backup power at maximum load in the event of a power outage. The battery longevity is 10 years or 2000 cycles and doubles the back-up time of a similar lead-acid battery. It is compatible with most all Ventev 48VDC UPS systems, both old and new – please consult the factory for final confirmation of your current system.