Di2 test: http://blog.tri-sports.com/2011/04/25/shimano-di2-battery-life-after-death/
Obviously depends on how often you change gears.
@hippy started
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Di2 test: http://blog.tri-sports.com/2011/04/25/shimano-di2-battery-life-after-death/
Obviously depends on how often you change gears.