Lithium Neato XV Series Replacement Battery for Neato XV-11, XV-12, XV-14, XV-15, XV-21, XV-25, XV Essential, XV Signature and XV Signature Pro, 4400mAH (Set of 2) - UL&CE Certified Battery Component Meets UL and CE Safety Standards. 1.5~2 hours Run. 2X Longer Run Time: 4400mAh + more than 800 charge cycles (vs. Original 3200mAh battery + 200 cycles) 4X Longer Battery Life than Neato and all aftermarket Ni-MH replacement batteries WORRY-FREE GUARANTEE! You will be 100% satisfied or we'll give you a full refund. FULLY compatible with the original charger. For more information, visit www.LithiumPowerInc.com