✔️【Stronger & Longer battery for Shark Battery RVBAT850 】14.4V 4.0Ah RVBAT850 lithium Ion battery provides 1.5X longer runtime for Shark ION robot vacuum and much more power than original battery. Higher capacity and long lasting performance enable your vacuum to cut half the time it takes to do a cleaning job! ✔️【Excellent Compatibility】Compatible with Shark ION R75, R85, RV850, RV850C, S87, RV851WV, RV871, RV871C, RV761, RV1000S, UR1000SR, AV752, AV751 RV1000S, RV1100VL, RV101AE robot vacuum. Compatible with Shark Ion RV700_N, RV720_N, RV725_N, RV750_N. ✔️【NOT Compatible】NOT compatible with Shark Ion RV700, RV720, RV750, RV755 (No "_N") with 3 prongs connector (plug). ✔️【Intelligent Battery Management】Advanced technology allows RVBAT850 battery for Shark Ion Robot Vacuums to communicate to provide the best performance possible that powers through heavier applications and protects against overloading and overheating. ✔️【Free return and replacement】Free return and replacement service available for 18 months + 7x24-hour Email service. If you have any problems with our batteries, feel free to contact us by email. 14.4V 4000mAh Replacement Battery for Shark Ion Battery Compatible with Shark Ion R75, RV761, RV850C, RV1000S, RV1100VL, RV101AE, UR1000SR, RV700_N, RV720_N Robot Vacuum