BT-DN300 Di2 Battery

The new DN300 integrated battery features the same waterproof design that Di2 users have appreciated for generations. With three ports, it provides stable power to Shimano 12-speed road derailleurs (and shifters if the fully wired option is chosen).

• Compatible with the new generation thinner SD300 power cable and systems later than the R9250/R8150 series.
  
• Li-Ion type
  
• Capacity: 500 mAh / 3.7 Wh (range of approximately 2,000 km)
  
• Nominal voltage: 7.4 V
  
• Recharges via the RD-R9250 / RD-R8150 rear derailleur using the EW-EC300 Di2 charging cable (sold separately).
  
• Mounting kit included.
  
• Weight: 52 gg

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