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Amazon.com: 4000mAh Replacement Battery for iRobot iRobot Roomba 614, Roomba 615, Roomba 640, Roomba 652, Roomba 665, Roomba 670, Roomba 671, Roomba 675, Roomba 677, Roomba 680, Roomba 681 and other models : Home & Kitchen
![Got this roomba as a gift. Also received these lighthouses from another friend… are they compatible??? How do I get them to work? When I put batteries in lighthouse the led flashes Got this roomba as a gift. Also received these lighthouses from another friend… are they compatible??? How do I get them to work? When I put batteries in lighthouse the led flashes](https://preview.redd.it/tuqh6y9wapk81.jpg?width=640&crop=smart&auto=webp&s=361f6e5eae9ee3e1e49290d27fd1c6849623efca)
Got this roomba as a gift. Also received these lighthouses from another friend… are they compatible??? How do I get them to work? When I put batteries in lighthouse the led flashes
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