Battery Details: Battery Type: Rechargeable Li-ion Battery. Capacity: 3200mAh. Voltage: 14.4V Universal Compatibility: This RVBAT850 replacement battery is compatible with Shark Ion R75, R85, R850, RV761, RV771, RV850, RV850C, RV851WV, RV871, RV871C, RV1000S, RV1100VL, UR1000SR, RV700_N, RV720_N, RV725_N, RV750_N and more Shark vacuum cleaners with 2-prong connector. Please confirm your model before purchase 2-Prong Connector: Please ensure your original battery has a 2-prong connector (not a 3 prong version). Verify both the battery model and connector type to confirm compatibility Simple Installation: Turn off the power, remove the battery compartment cover with a screwdriver, lift out the old battery and disconnect its wires, replace it by connecting the new battery's wires and inserting it Package Contents: 1 x RVBAT850 replacement battery, 1 x installation screwdriver Battery Details: Rechargeable Li-ion Battery. Capacity: 3200mAh. Voltage: 14.4V