: Roomba batteries are not one-size-fits-all. Lithium-ion (Li-ion) and NiMH batteries have different shapes and charging requirements; using the wrong chemistry can damage your robot.
: If you purchase your battery as part of a new vacuum or through Best Buy Protection , you may be eligible for a one-time replacement if the battery fails to hold at least 80% of its charge. Shopping Tips for Best Buy What Battery is Supposed to be in my Robot - iRobot best buy roomba battery
: Look for your specific model number (e.g., 675, i7, or j7) in the product specifications. : Roomba batteries are not one-size-fits-all