"Defective charge circuit will destroy battery"1.0 starson by macinlover
Pros: Will make you appreciate what a good mop and pail of water can do
Cons: Short battery life, Doesn't clean corners or edge of floor
Summary: A design flaw in Scooba's battery charging circuit, will destroy the battery if left connected to the power supply for an extended period of time, which in my case was about a month. I discovered this design flaw after the warranty period, because all previous charge cycles were done by removing the battery from the robot, and placing it in the charging station. The charge station will cut off properly when the battery is full. I only had at most 7 discharge cycles before the battery failed to hold a charge. When I phoned iRobot concerning this issue. I was at first told there was a design flaw in the software that caused the battery to be overcharge, and that I'd be sent a software update to fix that problem. But when I asked for a replacement battery, I was told that since I was outside the warranty window, I would need to purchase a new battery for the unit. Their explanation for why the battery failed changed to, you didn't use the product often enough, that is why the battery failed. Being an electronic design engineer with 25 years experience in circuit and software design, I found that comment to be pretty ridiculous for a product that has a nickel metal hydroxide battery.
My advise, go out an buy a good mop, and forget about this product. You can use that money to buy something more useful, and avoid the hassle of fooling with iRobot's customer service. You'll also save the expense of another battery when yours fails after a few uses.