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Shimano Di2 DN110 DN300 BTR1 Internal Recharge Battery BT-DN110-A For XTR/Dura Ace/ Ultegra SM-BTR1 External type battery - AliExpress
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Shimano Di2 Bt-dn110-1/btr1 Li-ion Battery Pack Internal Recharge Battery For Xtr/dura Ace/ Ultegra - Bicycle Derailleur - AliExpress
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