When it comes to rechargable batteries this APS is great.Much better then the the old Ni/Cads. The APS bateries tend to maintain a higher power output level the the old nicads.Odd thing but the longer you use it the better it becomes.Soon it'll recharge fully in about 2 1/2 hours. Important but when you first get it follow the instructions,no cheating.A full 24 hour first charge.No over night charge. A Full 24 hours. Frederick Jamnetski SINY

I ordered this iRobot Roomba battery on 5/4 and wanted to use it within a week (since the seller Buy it Now said the battery is in stock). However after days I received an email said that the battery is on back order and I need to wait one to two weeks. Then I found out that Buy it Now already charged battery cost to my credit card, it is very hard for me to cancel the order, so I said I must wait for one or two weeks.
My conclusion is that, I will not order anything from Amazon any more, Amazon is a bad place to let a bunch of lier and cheaters to use thier website to cheat people.
The following is a mail I sent to Buy it Now Store.
Hi,

I ordered this product on 5/4, today is 6/4, you told me first time I need to wait for two weeks, then one more week, now it is more than 4 weeks. When I ordered it , it says in stock; I promised my friend to get it in a week. Why you charged to my credit card immediately on 5/4, if you don't have the product? You are really a bunch of liers and cheaters. You totally waste my time, it's really a disaster.
Please tell me what to do, either return the money back ASAP or send the battery to me immediately.

Jack Zhou

The product is exactly what we needed to make our Roomba work again. Thank you.

There is a major bug in the IRobot software for versions prior to 2005 I believe (maybe 2004) which causes the robot to stop working and for batteries to charge improperly. They have a fix - send it to you free - and you ship it back (its a usb plug in device) free because they provide the envelope - Try the software fix before the battery.

I am not sure if this battery lasts any longer than the original. But it does last about the same. I hope the total life lasts longer than the original.