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Shimano Di2 integrated type battery [SD300 type] Black
ShimanoShimano Di2 integrated type battery [SD300 type] Black The new DN300 battery features the same waterproof design that Di2 users have loved for generations. Now with 3 ports, it provides stable power to Shimano's 12-speed road derailleurs and shifters (if fully cabled option selected). BT-DN300