Shimano BT-DN300 Built-In Type Di2 Battery

• This rechargeable lithium-ion battery delivers stable power to Shimano 12-speed road derailleurs and shifters (if a fully wired option is selected)
• Features 3 SD300 ports for simplified wiring to front and rear derailleurs; third port is for riders who seek the redundancy of a Shimano 12-speed Di2 wired option
• Updated DN300 battery features the same waterproof design as prior models
• Compatible with thinner next generation electric wire SD300 and systems after R9250/R8150 series
• Shared fixing method with BT-DN110 battery (not included)
• 3.7 watt hours
• 7.4 volts

Imported.