BT-DN300 Di2 Battery

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The new DN300 Built-In type battery features the same waterproof design that Di2 users have loved for generations. Now with 3 ports, it delivers stable power to Shimano's 12-speed road derailleurs (and shifters if a fully wired option is selected). Compatible with thinner next generation electric wire SD300 and systems after R9250/R8150 series Li-Ion type Capacity: 500 mAH / 3.7Wh (± 2000km autonomy) Rated voltage: 7.4V Charges through RD-R9250 / RD-R8150 rear derailleur using EW-EC300 Di2 Charging Cable (sold separately) Fixing small parts included Weight: 52 g Attributes Misc Built-In Type, with BlueTooth connectivity Show more