Shimano SM-BTR1 Dura-Ace Di2 Battery Pack

Shimano SM-BTR1

The 7.4V, high performance Lithium Ion battery is designed to deliver reliable, long life even in the worst conditions. In conditions requiring consistent and frequent shifting, the battery is capable of 1000 kilometers of use. (BE careful, This is NOT Miles!)

The battery is rechargeable and comes with a mount that easily adapts to most bikes. Lithium Ion technology is lighter, more compact and better performing than other power sources, making it a clear choice for Di2.

Lithium Battery
530mAh.
71g
7.4Volts

Japan Retail price 7.826 yen (see cross rate here)

Require to be charged with Shimano SM-BCR1