It sounds doable but I'd rather use a separate battery than Di2 for Garmin charging. At least you'd know where you are when your gears run out of juice :)
But imagine the excitement when both of them die at once out of range of a phone mast.
@atz started
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It sounds doable but I'd rather use a separate battery than Di2 for Garmin charging. At least you'd know where you are when your gears run out of juice :)