I bought this replacement battery because the original battery in my Braava 380 lasted less than 18 months. I opted for a factory replacement, which is 4 times more expensive than fakes. This time the last one would be better! My iRobot is older, used a few times a week and has never had a power outage before shutting down. I like both products and they work well so I'm hoping this new battery lasts over 18 months. If not, then there are some really good contenders (hint, hint)