Shimano lithium-ion battery for Di2 | SM BTR2 internally
Built-in battery, which is recessed in the seat post. By internally the laid cable gives a neat look of a racing bike. The integration of the batteries into the frame also reduces the number of those attachments that are in the wind. To charge the battery that can remain in the bike.
Shimano operates to bring the best possible products to market for each Race- switching group an enormous effort in development and production at the respective price. For the top groups Dura Ace Di2, XTR Di2 and the upper middle class Ultegra Di2 Shimano therefore used only the best battery technology!
Therefore, the battery of two high-quality lithium ion cells. These cells have a high capacity and thus hold about 2000 km by many switching operations. The lithium-ion technology allows the battery in a wide temperature range of -20 to 60 ° C to use and thus to be used in any season.
Nominal voltage: 7.4V
Capacity: 500 mAh
Compatibility: Shimano Dura Ace Di2 9000 series | Ultegra Di2 6700 series | XTR Di2 M9050 | Alfine Di2
Diameter: 16.5 mm
Length: 157 mm
Mounting: internal, seatpost
Weight: 52 g
Delivery: 1x Li-Ion battery
Note: In order to connect the battery to the external or internal distribution (Junction B) is still a necessary connection cables. What is also needed the charger SM-BCR2.