Shimano Di2 Battery

FEATURES: a Compatible charger: SM-BCR2 PRODUCT SPECIFICATIONS: MODEL NO- BT-DN110-A SERIES- DURA-ACE R9150 Series Average weight- 50 Type- Built-in battery Compatible charger- SM-BCR2 Chemistry- Li-Ion Rated capacity (Ah)- 0.5 Rated capacity (Wh)- 3.7 Rated voltage (V)- 7.4 SD300 connector (pcs)- 0 SD300 port (pcs)- 0 SD50 connector (pcs)- 0 SD50 port (pcs)- 1