【Warm tips】Please confirm your original battery is RVBAT850, the battery’s connector is 2 Prong. Please fully charge for the first time. 【Perfectly compatible】Replacement battery for shark, compatible with Shark RV850, RV850C, R75, R85, RV761, RV771, RV850WV, RV850BRN, RV851WV, RV871, RV871C, RV700_N, RV720_N, RV725_N, RV750_N, RV1000, RV1000S, RV1001, RV1001AE, RV912S, RV913S, AV751, AV752, AV753 vacuum...... 【Super long life】3000mAh RVBAT850 li-ion battery up to 2 years of life, large capacity can make your machine dynamic, a full can run 2.5-4 hours (running time will be based on the machine model and the degree of use) 【Intelligent protection】Professional battery management system with intelligent chip provides reliable multiple safety protection for overcharge, overdischarge, short circuit, overheat, overvoltage and overcurrent. 【Multiple certifications】Our battery has passed ROHS, CE, UL and other multiple certifications to provide a completely safe charging environment for your robot. 【Friendly customer support】You will get 3000mAh battery*1, Instruction manual*1. Support 30 days money back and 365 days warranty, response within 24 hours, and lifetime friendly customer service. Sparkole lithium battery up to 2 years of life, 3000mAh large capacity can make your machine dynamic, a full can run 2.5-4 hours (running time will be based on the machine model and the degree of use) Compatible with Shark RV850, RV850C, R75, R85, RV761, RV771, RV850WV, RV850BRN, RV851WV, RV871, RV871C, RV700_N, RV720_N, RV725_N, RV750_N, RV1000, RV1000S, RV1001, RV1001AE, RV912S, RV913S, AV751, AV752, AV753......