What battery is used for a iRobot Roomba 405 vacume cleaner?

Question

Do you know what type of battery is used for the i Robot Roomba 405 and where i can buy one?. If possible can you give me a link of a place selling it so i could buy one? (just bought the robot vacume from ebay really cheap but it has no battery or virtual walls)

Thanks. All answers will be appreciated.

Answer 1

This battery is built in according to Home shopping! You may check with them to see if you can purchase it alone but I think your outta luck!