BT-DN320 Di2 wireless rear derailleur battery

Description

• The power house of Shimano wireless Di2 is a long-life 310mAh Li-Ion battery that is both compact and reliable, taking shifting effort away from you
• Excellent sealing and reliability have been proven through repeated field tests in various riding conditions, including extreme temperatures, rain and mud
• The use of a small and discreet integrated battery is light weight, efficient and creates a robust and reliable system
• One charge gives a 340 kilometre range depending on conditions thanks to its power-saving battery management system
• Charging is done via EC-DN100 charger