Energup 5200mAh 14.4V Li-ion Replacement Battery for iRobot Roomba 4502233 960 895 890 860 695 6880 690 640 614 Battery type: Li-ion/Voltage: 14.4V/Capacity: 5200mAh. Made with the highest quality materials. High capacity battery for longer running time. Convenient to use A perfect replacement for older NiMH or NiCd iRobot batteries - no more memory effects and quick dying batteries Ultra high capacity 5200mAh, 60% more than the original 3000mAH Roomba batteries, so that not need to constantly replace batteries,Save your money 30 days money back, 180 days replacement and 12 months warranty, you can contact us anytime from the date of purchase, we will try our best to provide you the best service Fits exactly like your older batteries and is compatible with your current charger for an easy plug-n-play replacement. Get longer runtimes Better battery life Safe and reliable battery to use. The  battery unit has built-in over-charge, over-discharge, over-voltage,  over-current and over-temperature protection circuit