Dura-Ace Di 2 (Dual Integrated Intelligence) moves to the next generation. Tested in competition & taken to victory by pro riders in all conditions, including the 2012 Tour de France Team Sky. Keep your battery charged so you're not caught out without power. This charger is for the externally mounted battery. Key
Features: Dura-Ace Di 2 charger that will keep your Di 2 system shifting. Dura-Ace Di 2 uses a powerful long-life 7.4V Li-Ion battery: keep it in top condition & ready for shifting with this specific Shimano Di 2 charger. LED indicator lights. 1.5 hour charge time. Does not include a power lead.