Shimano Di2 Built-In Battery SM-BTR2


Ever since Shimano released the Di2 groupsets, we've been waiting for an internal battery option to replace the external one that was always difficult to find the best spot to place.

Now the wait is over and Shimano truly delivered a small, light and cylindrical battery that can be placed in multiple places of the frame like the seatpost (most common), seatube or even downtube. Probably the best feature of this new battery is that you don't need to remove it from the bike to recharge. Due to the clever junction box located under the stem, it is possible to charge the battery by plugging the USB cable.

One charge will last you 1500km to 2000km and Shimano claim you can fully recharge the battery 300 times at 100% battery capacity.

Shimano SM-BTR2 Di2 Battery comes with a seatpost mounting hardware to help you but you might need frame-specific adapters to finish the installation.

We understand how important shipping is once you click "buy now", that's why we have the following policies

Australian Warehouse

All products are in stock and ready to ship from our Sydney warehouse (with the exception of preordered bikes, which have the dispatch date illustrated)

Next day dispatch

All orders received by 5 pm AEST will usually be dispatched the following business day. If an order is placed on the weekend or public holiday, please note dispatch will usually be the next working day. For tracked shipments, please allow 12 hours for tracking to begin.

Shipping of Parts, Accessories and Apparel

Economy Shipping

There is free delivery available on all small parcels Australia wide using tracked services of Australia Post or Fastway, no minimum order value required! Estimated delivery time is 4-9 business days. 

Express Shipping

We do also offer Express Shipping for a small additional fee on parts, accessories and apparel orders. Estimated delivery time on Express Shipping is 1 to 4 business days.

Shipping of Bikes

Shipping of bikes and other bulky goods is free to 85% of residences in Australia. However, some postcodes incur a surcharge starting from $29. 

Once shipped you will be issued a consignment number which can be used to track your parcel. We use Direct Freight Express for deliveries and you can track your delivery by calling 1300 347 397 or online at


This product comes with a 12 month Australia Wide Warranty. In the unlikely event that you require a warranty repair, we will collect your item, repair or replace it, then return it to you at no charge. It is a requirement of warranty that you keep the original packaging for transportation.

Learn more about our Warranty Policy.

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