The Shimano SM-BCR1 Battery Charger is the solution for charging the SM-BTR1 external lithium-ion battery used in Shimano Di2 electronic shifting systems. This charger is designed for cyclists who use Dura-Ace or Ultegra Di2 groupsets with a removable external battery. The battery is simply unclipped from its mount on the bike and placed into the charger for replenishment, with charging typically completing in 60 to 90 minutes. An orange charge status indicator confirms when charging is in progress, and the light turns off once charging is complete. The charger is universally compatible between Dura-Ace and Ultegra Di2 systems, but it is only intended for use with the SM-BTR1 battery.

Weighing just over 100 grams, the SM-BCR1 is compact and easy to transport or store, making it practical for home mechanics, travel, or club environments. Its straightforward design and clear indicators make it suitable for all levels of riders with Di2 electronic systems, and it is particularly valued for its reliability and safety in keeping your external Di2 battery ready for long rides and events.