BT-R1A External Di2 Battery

The Shimano BT - R1A External Di2 Battery is a must - have for your Di2 shifting system. To complete the setup, you'll need to purchase a battery charger and power cable. All Di2 components on your bike should have the same firmware version; using components with different versions can lead to malfunctions. You can easily update component firmware using the Di2 system checker from http://e - tubeproject.shimano.com/. This battery is compatible with Dura - Ace 7970 Di2, Dura - Ace 9070 Di2, and Shimano Ultegra Di2 shifters and derailleurs.

Using the Shimano BT - R1A External Di2 Battery is easy. First, make sure you buy a battery charger and power cable to get the system up and running. Before using, check that all Di2 components on your bike have the same firmware version. You can update the firmware by going to http://e - tubeproject.shimano.com/ and using the Di2 system checker. This will prevent any malfunctions. When it comes to maintenance, keep the battery clean and dry. Store it in a cool place when not in use. If you notice any issues with the battery or the shifting system, check the firmware again and make sure all connections are secure.