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Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed Holder next to seatpost (FSA shown) and battery

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Holder next to seatpost (FSA shown) and battery
Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed Holder next to seatpost (FSA shown) and battery
Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed Holder next to seatpost (FSA shown) and battery

DIGITAL PREVIEW
Not a Photo

Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed Completed assembly
Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed Completed assembly

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Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed Holder properly attached to battery - notice internal notch ring
Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed Holder properly attached to battery - notice internal notch ring

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Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed Guide the battery into the seatpost
Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed Guide the battery into the seatpost

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Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed Compress the rings as it is being inserted
Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed Compress the rings as it is being inserted

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Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed It should fit tight at this point
Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed It should fit tight at this point

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Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed Continue pressing in the battery.  The fit here will be tight.
Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed Continue pressing in the battery.  The fit here will be tight.

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Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed Insert fully as shown here
Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed Insert fully as shown here

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Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed To extract, grip with pliers and twist the seatpost and holder while gently pulling
Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed To extract, grip with pliers and twist the seatpost and holder while gently pulling

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Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed When it is out this far, use your hands to extract the battery
Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed When it is out this far, use your hands to extract the battery

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Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed
Di2 Battery Holder for 25.4 Seatpost (19.5mm ID) 3d printed

DIGITAL PREVIEW
Not a Photo

Di2 Battery Holder for 25.4 Seatpost (19.5mm ID)

Made by
Not For Sale
$22.95
3D printed in white nylon plastic with a matte finish and slight grainy feel.
Product Description
*** NEW VERSION AVAILABLE FROM BUPLABS.COM ***
We now sell complete kits and accessories at www.buplabs.com.  These DIY parts will still be available here, but you can get the latest and greatest directly from Bup complete with all hardware and accessories.


This battery holder sleeve is for the Shimano Di2 internal SM-BTR2 or BT-DN110 battery. This battery fits inside the seat post but typically requires a seat post made specifically for Di2.  The holder sleeve allows the battery to be held securely within a non-Di2 specific 25.4mm seat post found on many Cannondale bikes from 2014 to current.  It will also fit other seat posts with the same inside diameter.

This model is for a 25.4 mm seat post with a 19.5 mm inside diameter.

IMPORTANT NOTE:  We make Di2 battery holders for 25.4mm seat posts with 19 mm, 19.5 mm, 20 mm, and 21 mm inside diameters.  If your measurement is close, pick the smaller size.  If the measurement is more than .5 mm from the available sizes, or an odd shape, contact us for a custom version.  There are also versions made for 27.2 mm seat posts with various inside diameters.

Installation Instructions:
To use this holder, simply spread the holder at the long seam while inserting the battery, with the battery connector end facing the thick lip.  Continue inserting the battery until the battery is fully inserted and touching the inside of the thick lip.  There is a smaller internal lip that holds the battery in place.  Ensure that the battery is locked into that lip, and not simply pressed up against it.  If the battery retracts easily from the holder, that means it isn't inserted fully and is not locked in.  After the holder is attached, insert the battery holder assembly into the seat post.  It will require moderate force to insert when you reach the splines.  Once the battery is inserted, it cannot be easily removed by hand.  Use a pair of pliers to grip the thick lip to pull the battery back out.  DO NOT pull the battery out by the battery connector!  Retraction is easiest by gripping the holder sideways, and twisting it out until it is out about an inch.  It can then be removed by hand.

See the YouTube video for a demonstration.

 
Details
What's in the box:
Di2 Battery Holder For C3 25-4 Seatpost
Dimensions:
2.35 x 2.39 x 9.4 cm
Switch to inches
0.92 x 0.94 x 3.7 inches
Switch to cm
Success Rate:
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Rating:
Mature audiences only.
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