Di2 Battery Holder (Rubber) for 25.4 mm Cannondale C3
BL-01-000107
$21.95 – Out of Stock
This battery holder is for Shimano Di2 internal SM-BTR2 and BT-DN110 batteries. The battery fits inside the seat post and typically requires a seat post made specifically for Di2. This holder allows the battery to be held securely within a 25.4 mm Cannondale C3 seat post. It will also fit other seat posts with the same inside diameter.
Weight: 11-12g
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Battery Holder Sizes
Other Di2 battery holders for 25.4mm seat posts are available in polypropylene for a wider variety of seat posts. This model is only available while supplies last.
Why use a holder instead of tape or foam?
Ad hoc solutions using tape and foam have multiple issues. The net result is often a damaged or stuck battery.
Problems with Tape or Foam:
- They don't protect the delicate battery connection
- Tape or foam can shrink, causing the battery to fall out
- They can cause the battery to overheat
- Tape, especially, can fuse to the inside of the seat post
