The first impression a good, inexpensive alternative

The first impression a good, inexpensive alternative

4500mAh Ni-MH Battery for APS iRobot Roomba R3 500 510 520 530 531 532 535 540 550 555 560 562 563 564 570 580 581 770 780 fits 80501 Discovery series robot vacuum cleaner (Misc.)
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Customer Review

Quenched by the high price of the original battery pack, I looked around for alternatives. Other reviews have helped in the decision.
The delivery was properly summoned and the battery of Roomba (563 Pet Series) running again as the first day.

I can not say anything about the durability.

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