GUOFANG
✓Price
$27.99
eMagTech 1 Pack Di2 Seatpost Battery Holder 30.9 to 31.6 mm Compatible with Shimano SM-BTR2 BT-DN110
★★★★★
$27.99
Quantity
1
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About this item
- Seatpost battery mount compatibility: compatible with Shimano SM-BTR2 and BT-DN110 internal batteries for electronic shifting systems, sized for 30.9 to 31.6 mm seatposts to ensure a centered, secure fit.
- Replacement: matches the form of the original support to stabilize the internal battery; use as a direct replacement when refurbishing frames or converting bikes to internal battery placement.
- Rubber stabilizer sleeve material: flexible elastomer compresses to reduce noise and vibration, protects the battery surface from abrasion, and maintains spacing from seatpost walls without tools or adhesives.
- Quick install function and use: slide the sleeve onto the battery, insert into the seatpost, and route wiring; supports road, gravel, and mountain riding where rough surfaces demand reliable retention.
- Application scenarios and users: ideal for home mechanics, shop technicians, and event support crews; practical for maintenance, frame swaps, and travel builds using internal electronic drivetrains.
Product details
Customer reviews
What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
Trustpilot
★★★★★
Excellent
4.5 average rating
S
Sigalit
🇮🇱 · January 2026
★★★★★
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
V
Verified buyer
🇦🇺 · November 2025
★★★★★
The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
Showing 1–2 of 10 reviews
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