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grams
I plugged back in the Di2 wireless unit this week. Went to ride the morning and only 20% battery charge. It was fully charged last weekend. Managed to get half the ride in with full shifting. Second half only rear change working. Luckily I was in the small ring at the time.
Is this a known issue with the units? Is there something that can be done so I don’t have to charge every week?