The battery of Ansmann stands for the original Canon in nothing. He maintains fully charged subjectively exactly as long as the Canon; whether it is a little less or a little more, I can after 2 weeks of intensive use not say, but the difference may not be particularly large. Changing the battery is easily done, it is rebuilt accurately the original, so that there are no problems and nothing stuck or similar .. I can therefore recommend the battery fully - and should I buy a third, it will return this.