Check and replace 12-speed wireless Di2 shifter battery

This video shows how to check the battery level on the new 12-speed wireless Di2 shift levers, the DURA-ACE ST-R9270 and the Ultegra ST-R8100.

These CR1632 batteries should last about 1.5 to 2 years, but at some point, you'll have to change them.

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When the battery level indicator turns red, you've got about a month left until it runs out completely.

Changing the battery is very simple, and doesn't require you to re-pair the lever afterward.

If you'd like to read more on Di2, or how to change the lever battery, have a look at the site: https://bettershifting.com/check-di2-...