Shimano Battery BT-DN110-A
Compatible with Dura Ace R9150; Ultegra R8050; Deore XT M8050; XTR M9050. The lithium-ion battery BT-DN110 can be mounted internal or external. The internal assembly takes place in the head tube or in the seat post
The life of the battery is up to 2.000 km with one full charge.