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How long will the battery last?

RuuviTag comes with a CR2477 battery that theoretically lasts about 4 years.

However, in practice, battery lifetime will be somewhat shorter so to be safe, we tend to say it has a 2+ year battery.

Battery life depends on temperature. In cold temperatures, lifetime will be shorted due to battery and in really warm temperatures electronics consume a bit more power than on room temperatures. This can shorten the projected battery life.

See how to change the battery here.