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Amazon.com: KUNLUN 3200mAh i7 Battery Replacement Compatible with iRobot Roomba e and i Series i7+ 7150 7550 i3 3150 i3+ 3550 i4 4150 i4+ 4624864 ABL-D1 Lithium Ion Battery Extended Life : Home & Kitchen
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iRobot Roomba i4 (4150) Wi-Fi Connected Robot Vacuum Good for Pet Hair, Carpets, Hard Floors, Self-Charging - Walmart.com
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