melasta 6400mAh Lithium Battery Replacement Compatible with iRobot Roomba 675 655 650 860 870 880 890 660 677 770 780 535 551 58

Fits Perfectly : Replacement compatible with roomba battery 500 600 700 800 series, 510 520 521 525 530 531 532 533 535 536 537 550 551 552 555 560 561 562 563 564 565 570 571 577 578 580 581 585 590 595, 610 611 620 625 630 640 645 650 652 655 660 670 671 675, 760 770 780 790, 850 870 871 880. Not compatible with Roomba 690 and 900 series | 6400mAh Higher Power & Much longer run time: melasta 14.8v 6400mah lithium ion battery which runs much longer than all the batteries on the market, provide a untra-long up to 3-4.8 hours for Roomba vacuum cleaning robots when fully charged | Super long cycle life & Rechargeable up to 1000 Times: Delivers up to 5x the battery cycle lifetime (VS nimh replacement batteries) , it?s one of the longest life batteries on the market , It can last 2-3 years if it is well maintained. Note: Replacement battery for roomba, not original | Top-rated safety certification in the wolrd: Melasta lithium battery cells have CE, ROHS, FCC, MSDS, UN 38.3 approvals, so please feel assured and safe to use our battery | Customer Friendly Service: Don?t hesitate to us know if you have any problem when using our product, we will help you to fix the issue. We stand behind our product with 45 days money back. NOTE(The picture and A+section contains a maintenance guide for the battery, hoping to be helpful to you. Please refer to the video for voltage measurement methods