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Shimano Di2 SM-BTR1A Universal Battery

ShimanoDi2 SM-BTR1A Universal Battery(Return to Product Page)

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(3 customer reviews)
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User submitted reviews

Review by CCRcyclist

Reviewed 12/4/2023
by CCRcyclist
Cycling Enthusiast
coastal Virginia
Value Rating
Overall Rating
Battery had degraded while on the shelf, must be recharged much more often than expected

I bought this battery to replace/supplement an older battery that had degraded over the years. I expected this battery to require recharging once a month or even less frequently like a fresh model. However, I need to recharge it after only 5-6 rides of modest distance (35-40 miles) and modest shifting. Apparently, this battery had been sitting on the shelf and degraded over time. At the very least, the price should be reduced if they continue to be sold as new fresh batteries.

Thank you for your feedback.

Review by Anonymous

Reviewed 11/11/2018
by Anonymous
Overall Rating
0 of 2 customers found this review helpful.
Not reliable

I had to get an extra battery because the first one drains if you forget to disconnect it after each use. There is also very little info on how these work or the readings when connected. After charging it up I get a green and red light. There is no literature on this stuff but no other option anyway other ham you got to have it to get the bike to work.

Thank you for your feedback.

Review by gpep

Reviewed 11/8/2018
by gpep
Cycling Enthusiast
park city utah
Value Rating
Overall Rating
0 of 1 customers found this review helpful.
oops, it wasnt the battery

my original batter didn't seem to be working, so I ordered a new one. It was well priced and arrived quickly but I didn't need a new one. I brought bike in for service and they corrected the short in the shift toggle.

Thank you for your feedback.

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