*Free shipping on orders over $99

Free Shipping Policy

Free Shipping applies to all orders placed for $99 and above
(pre-tax value). Some restrictions apply:

  • Offer valid in the Lower 48 States only
  • Excludes Complete Bicycles, Framesets, and some other oversize items
  • Excludes certain sale items

Road Electronic Supplies

This Lithium Ion battery for Shimano Di2 electronic shifting systems was developed as an external battery option for e-Tube wiring on frames without frame integrated / internal wiring options. This is the battery only, no mount or charger included. Shimano mount options, which have the e-Tube port and communications technology required.

Return to Top

  • External e-Tube compatible Di2 battery; reliable Lithium Ion power for Di2 systems
  • Designed to connect with mount for externally wired e-Tube systems
  • Incredibly durable, sealed composite housing
  • At full charge the battery can deliver up to/around 1000 miles of use
  • Battery only; mounting system and charger sold separately.
  • Weight: 70 grams
  • Shimano part# ISMBTR1A

All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions.

Return to Top