【Compatible with Shark Vacuum Battery Replacement】: For 2-Prong Connector - Shark battery RVBAT850, RV700_N, RV720_N, RV725_N, RV750_N (Attention the "_N" of model #), R75, R85, S87, RV771, RV761, RV850, RV850C, RV850BRN, RV851WV, RV871, RV871C, RV912S, RV913S, RV1000... 【Not for 3-Prong Connector】: Please double confirm the battery model and connector to avoid buying a wrong product. If you have any questions about the product or sizing, or encounter issues during use, feel free to contact our customer service anytime. 【3.2Ah for RVBAT850 Shark Ion Battery】: 14.4 / 3.2Ah Upgraded Capacity / Lithium. Same size & function as RVBAT850, fits perfectly & work well. Full charge can last 120 -180mins. 【Fast & Safe Charge】: Compatible with Shark battery RVBAT850 charger station. Fast charge form 0-100% about 3.5 hours. Top A grade lithium Battery cells charge stable has built-in protection. Protect against overcharge, over discharge, over current, short circuit. 【Easy to Install & Reliable】: 2mins Install - just remove the two screws on the bottom, remove the RVBAT850 battery connector and connect the new one, and let your machine clean of all dirt, dust, debris, hair, and anything on the floor. Compatible with Shark RVBAT850 Battery