Have the battery now used several times and found no difference to the original. Think it will be as durable as it despite lower nominal power remains faithful just as long. Good second battery at an affordable price. Everyone should buy a second battery, this would be my choice again and again! There are also cheaper, but this is worth the money. It fits easily on my IXUS 80, which so far in the description was not yet there ... Update: I used the battery now 4 years - camera broken, keeps battery! Performance so far good and absolutely comparable to the original: equivalent and thus very good buy.
