The Shimano Di2 Internal Seat Tube Battery BT-DN110-A1 is a lithium ion for Shimano Di2 group sets. The Shimano Di2 battery consists of two high-quality lithium-ion cells. These cells offer a high capacity and thus keep about 2000 km with numerous switching operations. The lithium-ion technology allows the battery to be used in a wide temperature range of -20 to 60 ° C and therefore to use in every season. 

Weight: 55 g