Shimano SM-BCR2 Di2 Internal Battery Charger

Shimano SM-BCR2 Di2 Internal Battery Charger (Direct to SM-EW90 Junction). The Shimano SM-BCR2 Di2 Internal Battery Charger (Direct to SM-EW90 Junction) for the internal battery that will keep your Di2 system shifting. 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. Shimano SM-BCR2 Di2 Internal Battery Charger (Direct to SM-EW90 Junction) Extra Info. - 1.5 hour charge time - Plugs in directly to the SM-EW90 handlebar Junction A - Can also be used for completing firmware updates when linked to E-tube software on your PC