Shimano DN110 Di2 Internal Battery

Shimano Internal Battery Master Unit for your Shimano Di2 system. This battery weighs just 50g, and is mounted inside your seatpost.

• E-Tube Port
• Type: Built-in battery
• Battery: Li-Ion
• Rated Voltage (V): 7.4
• Rated Capacity (Ah): 0.5
• Rated Capacity (Wh): 3.7
• Compatible Charger: SM-BCR2
• Average Weight: 50g