BT-DN300 Built-In DI2 Battery - For Dura-Ace 9250 Ultegra R8150 Systems Compatible SD300 Wires

The Shimano BT - DN300 is a top - notch built - in DI2 battery designed for Dura - Ace 9250 and Ultegra R8150 systems. It's fully compatible with SD300 wires. This battery is an essential part of the Shimano Di2 system. Remember, to complete the system, you must buy a battery charger and power cable. All Di2 components on your bike need the same firmware version; using components with different versions may lead to malfunctions. You can update component firmware via the Di2 system checker at http://e - tubeproject.shimano.com/.

Using your Shimano BT - DN300 battery is easy. First, make sure you've purchased a battery charger and power cable to complete the system. Install the battery according to the instructions that come with your Dura - Ace 9250 or Ultegra R8150 system. When it comes to firmware, all Di2 components on your bike should have the same version. You can use the Di2 system checker at http://e - tubeproject.shimano.com/ to update the component firmware. This helps prevent malfunctions. For maintenance, keep the battery clean and dry. Store it in a cool place when not in use. If you notice any issues, check the connections and the firmware first.