The Shimano Di2 battery SM-BTR1 - For external mounting on the down tube The Shimano Di2 battery SM-BTR1 for external mounting is a rechargeable lithium-ion battery for Shimano electronic shifters. It is attached to the outside of the down tube with a bracket and is suitable for both internal and external cable routing. The battery has a maximum range of 2000 kilometres.
Information regarding the return of batteries and electrical equipment: Information on the return and disposal of used batteries and electrical equipment can be found here.
Specifications: Type: lithium-ion battery Voltage: 7.4V Energy Quantity: 3.7 Wh Capacity: 500 mAh Charge Time: ca. 90 minutes
Features: - model SM-BTR1 type 1 for external mounting - external or internal cable routing possible - service life of at least 500 charges - minimum range 1000 km, maximum 2000 km - easy removal and insertion for charging in the battery mount - excellent reliability - recycling mark - compatible charger SM-BCR1 sold separately
Technology: What happens if the battery charge level drops? If the charge level is less than 25 %, a red warning light on the control unit of the cable starts to glow permanently. However, it can still be shifted over a distance of about 250 kilometres. If the battery is completely discharged, the red warning light flashes. In the worst case, first the front derailleur fails and then the rear derailleur stops in its current position. Of course, it can still be ridden. Charging Status: - green glowing: 100 % - green flashing: 50 % - red glowing: 25 % - red flashing: 0 %