Di2 Battery Holder (Rubber) for 25.4 mm Cannondale C3
BL-01-000107
$21.95
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
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