Pay in installments of $33.12 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 18 - Jul 23
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
BT-DN300 Di2 BatteryThe new DN300 Built In type battery features the same waterproof design that Di2 users have loved for generations. Now with 3 ports, it delivers stable power to Shimano's 12 speed road derailleurs (and shifters if a fully wired option is selected). Compatible with thinner next generation electric wire SD300 and systems after R9250 R8150 series Li Ion type Capacity: 500 mAH 3. 7Wh ( 2000km autonomy) Rated voltage: 7. 4V Charges through RD R9250 RD
- The new DN300 Built-In type battery features the same waterproof design that Di2 users have loved for generations. Now with 3 ports, it delivers stable power to Shimano's 12-speed road derailleurs (and shifters if a fully wired option is selected).
- Compatible with thinner next generation electric wire SD300 and systems after R9250/R8150 series
- Li-Ion type
- Capacity: 500 mAH / 3.7Wh (± 2000km autonomy)
- Rated voltage: 7.4V
- Charges through RD-R9250 / RD-R8150 rear derailleur using EW-EC300 Di2 Charging Cable (sold separately)
- Fixing small parts included
- Weight: 52 g
Attributes
| Misc | Built-In Type, with BlueTooth connectivity |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 9 reviews
Sort
Product Reviews
★★★★★ 5
Great for walking all day at work as well
Size: X-Large, Color: (001) Black / Black / White
I walk approximately 10 miles a day at work, in a manufacturing setting. On concrete with steel toe shoes. My feet have been begging me to change from the socks that I have worn for years. I have worn these other name brand socks for probably 10 years. So, change was obviously something I had to be pushed into. I got on Amazon and searched for training socks. I read the description. Glanced at the reviews. I decided to move forward with purchasing these. I could not have been happier. My feet began feeling better immediately. And the priced was very reasonible.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
★★★★★ 5
You have one pair of feet. Treat them kindly with a pair of UA socks
Size: Large, Color: (100) White / White / Black
Soft and tough. Easy on the feet. Nice fit prevents sore spots and blisters.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025
★★★★★ 5
Not to thick or thin well made
Size: Medium, Color: (601) Bittersweet Pink / Stone / Stone
I bought pink so as not to lose when doing laundry with my daughter who steels all socks lol!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
★★★★★ 5
Perfect
Size: X-Large, Color: (601) Bittersweet Pink / Stone / Stone
They were perfect
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
★★★★★ 5
Very Comfortable!
Size: Medium, Color: (601) Bittersweet Pink / Stone / Stone
Very comfortable. Don’t slip off back of heal. Love the colors.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
recommand products
Clutch Slave Cylinder Toyota Rav 4 2.0 97-99
232.74
Clutch Master Cylinder Toyota Landcruiser 4.0P Fj75 3F 90-92 / 4.5P Fzj75 1Fz 92- (Similar To Cm190.8042)
505.25
Clutch Slave Cylinder Toyota Corolla All Vvti 2001-, Plus Run-X
235.97
Clutch Slave Cylinder Toyota Prado 3.4D 97-
270.37
Toyota Rav4 L 2.0 (94-01)
285.42