The only 11-speed di2 parts that’ll work with 12-speed Di2 are some TT/tri shifters and SW-R9150.
Any thoughts as to why my new 12 speed battery loses 5-10% charge per day when not in use?
@BetterShifting.Terry started
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The only 11-speed di2 parts that’ll work with 12-speed Di2 are some TT/tri shifters and SW-R9150.