| Description | The BT-DN300 Battery by Shimano - The power source for your Di2 shifting system The BT-DN300 is a lithium-ion battery developed by Shimano for the Dura-Ace and Ultegra Di2 2x12-speed road groupsets. Like its predecessor, it is installed internally in th |
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| Supplier SKU | KBTDN3003 |
| Brand Name | SHIMANO |
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