These Duracell batteries are really great, I have a bad fluid and the clock batteries from my office wear faster than normal (yes because time should pass more quickly at work I suppose? Or is the otherwise ...), genre after 3 days I already had problems. I did the test with those Duracell batteries and balance sheet after several days is very positive! The load test tells me that they are always on top!
I like being able to check the battery charge, especially when used in a multi-device and you want to check which is flat!
The price / quality ratio is very good because the Duracell always last longer than other brands I've tried. The length worth!