SKU: 75478214666

Shimano SM-BTR1 Di2 External Battery

Sale price$99.00 Regular price$110.00
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Description

Shimano SM-BTR1 Di2 External BatteryShimano Di2 SM BTR1 Battery Shimano's Di2 SM BTR1 Battery is their external power source. It works with all versions of Di2, provided you have a SM BMR2 Battery Mount to attach the battery to the system. Battery life depends on many factors. It's not only the number of times you shift, but the climatic conditions, and how often you use the front derailleur, as it takes more energy per shift. The general guideline is 1,000 2,000km riding per charge,

Shimano Di2 SM-BTR1 Battery

Shimano's Di2 SM-BTR1 Battery is their external power source. It works with all versions of Di2, provided you have a SM-BMR2 Battery Mount to attach the battery to the system. Battery life depends on many factors. It's not only the number of times you shift, but the climatic conditions, and how often you use the front derailleur, as it takes more energy per shift. The general guideline is 1,000-2,000km riding per charge, and with approximately 300 charge cycles before battery performance starts deteriorating and needs replacement.

If you're worried about running out power on a ride, know that you'll first get a warning light on the stem-mounted junction box. If you don't see that, you'll lose the ability to shift the front derailleur first, and then you'll have 100-200 shifts left before it goes dead. Charging a battery from empty, and you'll need to pick up the SM-BCR1 Battery Charger, and the SM-BCR1 Power Cable separately, will take 90 minutes. Power up your Di2 System with the SM-BTR1 Battery. 

MODEL NO: SM-BTR1
SERIES DURA-ACE 9070 Series
weight: 70g

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SKU: 75478214666

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jose
Lake Worth, US
★★★★★ 5
Check how long cable is and which feet it the cable
Size: 6 Ft, Color: Black
I like lol because. My tv cable can’t pull in outlet under my bed because is 3 feet but I like outlet between my bed and my tv and I can pull under my bed to my tv mount
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Reviewed in the United States on November 3, 2025
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Joshhumpy
New York, US
★★★★★ 5
5*s no complaints satisfactory extension or surge
Size: 6 Ft, Color: Black
Good product plugs hold tight. Needed it replace an old surge protector that the plugs were worn out on. My phones charger would shutter on and off and i was worried about what it was doing to the health of my battery. Would buy again usb ports are good for smart watch chargers too.
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Reviewed in the United States on July 26, 2025
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Amazon Customer
Boise, US
★★★★★ 5
Great item 2 different size USB’s
Size: 6 Ft, Color: Black
Perfect for my needs. Kitchen. Bedside tables. I ordered 2. Going to order 2 more.
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Reviewed in the United States on May 29, 2025
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WW
Houston, US
★★★★★ 5
Very useful
Color: Black
I’ve been using this room divider to separate my space from my daughter’s, and it has worked out really well. It provides just the right amount of privacy while still keeping the room feeling open and comfortable. The design is simple yet stylish, so it blends nicely with our decor. It’s also lightweight and easy to move when needed, which is a big plus. The material feels durable and well-made, not flimsy at all. Overall, it’s a practical and attractive solution for shared spaces, and I’m very happy with this purchase. I would definitely recommend it to others.
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Reviewed in the United States on April 16, 2026
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Amy
Alexandria, US
★★★★★ 5
Great Room Divider
Color: Black
This product is a great room divider that decent quality and worth the price tag. The look is sleek and fits seamlessly into any room without complaint. The assembly was easy to follow and the quality is long lasting. Not only that, I need it as my sons share a room and we’re looking for some privacy. The divider is able to extend across a decently large area really divide the room as it has 4 panels. Overall, this is a great product for its cost and if your looking for a room divider that’s not too costly, this is the pick.
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Reviewed in the United States on April 12, 2026

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