The Di2 Battery uses the latest in Lithium Ion technology to deliver reliable long life, and still remain lightweight. The 7.4 volt battery will last through conditions requiring constant and frequent shifting on rides reaching 1000 kilometers – that’s a long ride!

• Battery reaches full charge level after one hour and thirty minutes of charging
• At 50% of full charge battery life will still provide about 250km (150miles) of shifting power
• Battery performance can be affected by weather conditions – cold in particular
• Front Derailleur will stop first when battery runs out, followed by the rear
• When battery power is completely consumed the derailleur’s stop at the last shifting positions