What is inside of a Shimano Di2 Internal SM-BCR2 Battery

Dura-Ace Di2 Dual Integrated Intelligence moves to the next generation. Tested in competition and taken to victory by pro riders in all conditions including the 2012 Tour de France Team Sky. Keep your internal battery charged up with this Di2 unit. Key Features Dura-Ace Di2 charger that will keep your Di2 system shifting. Dura-Ace Di2 uses a powerful long-life 7.4V Li-Ion battery keep it in top condition and ready for shifting with this specific Shimano Di2 charger. LED indicator lights.

Shimano Di2 SM-BCR2 Battery Charger

Shimano Di2 SM-BCR2 Internal Battery Charger [ISMBCR2]

Faulty Di2 battery charging

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Shimano Di2 Battery Charger - SMBCR2 for sale online

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Shimano Di2 SM-BCR2 Internal Battery Charger [ISMBCR2]