iRobot APS 4905 Battery from Roomba
These APS battery for iRobot is brought to you by Roomba for your vacuum cleaners. These batteries are rechargeable in nature, so can be charged when they gets empty. They can be recharged for nearly 500 times, before they can be replaced. With APS fast charging technology, they get ready for reuse only within 3 hours of recharging, when the battery was initially fully discharged.