For 11 speed Di2 systems. Dura Ace, Ultegra, XTR, XT. R9150, R9170, R9050, R8050, R8070.

The SHIMANO BT-DN110-A internal battery is designed specifically for Di2 systems, delivering reliable 7.4 V and 3.7 Wh power. Its built-in type ensures seamless integration with compatible chargers like the SM-BCR2. Engineered for efficiency and durability, this battery supports consistent electronic shifting performance and long-term use.

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