Description
<li>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
1.5 hour charge time</li><li>Plugs in directly to the SM-EW90 handlebar junction A</li><li>Can also be used for completing firmware updates when linked to E-tube software on your PC</li>