【Shark Battery RVBAT850 Compatibility】AV1010AE, AV1102A1US, AV1102ARUS, AV1110A1US, AV1110ARUS, AV2310, AV2310AE, AV2501AE, AV2501S, AV2511AE, AV2610WA, AV2610WACA, AV751, AV751R00US, AV751R01US, AV751R31US, AV752, AV752R00US, AV752R01US, AV752R31US, AV752X01US, AV753, AV753R00US, AV753R01US, AV753R31US, AV753X01US, AV9112S1US, AV9113S1US, AV911S, AV970, AV970GV1US, AV970GVRUS，RV850, RV850C, RV850BRN, RV851WV, RV871, RV871C 【 4500mAh Higher Capacity 】RVBAT850 shark ion battery replacement 4500mAh high capacity , Brand New 0 Cycle battery cell capacity is upgraded to store more power, bring more standby time, increasing battery life and and reduce your recharging times.Batteries should be fully charged and cycled 3 to 5 times for best results. 【NOTE BEFORE PURCHASING】1、The battery type is lithium battery: the battery can be charged to 100%, but it may be drained quickly, from 50% to 20% within a few seconds of the first charge. This is a normal phenomenon for lithium batteries, which need to be cycled 3-5 times to achieve the best results. Please confirm your battery type before purchase, happy shopping. 【Efficient Charging】Grade A+ cells ensure longer battery life and high-speed,efficient charging.Up to 1000 highly efficient charge cycles are available. .we suggest you to watch more relevant video about replacing the battery on YouTube before you replaced. 【Smart IC Chip Security Protection】TQTHL Shark Vacuum Battery Replacement is made of new high quality Lithium polymer battery cell with CE, FCC, UL, PSE and ROHS certification. The latest cost-effective smart IC chips, which make sure your phone prevent over-heating, short-circuit, over-charging and over-discharging for safe and prolonged use. 【Worry-Free Guarantee】12-hour respond, friendly customer service. Please contact the Taeozi support team for the first time if you are not satisfied with this item. we will reach out to you within 24 hours.]We will spare no effort to help you. Thank you. ASIN