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  • Shimano may not want two batteries, depends on what their engineers think is the optimal path- if it’s wireless comms from the shifters to the mechs, which are connected to a single battery that is in for e.g. the seat tube then that would tidy up the handlebars a little. I’d be sticking with eTap on my travel bike though as that has no wiring loom at all, but I would very much prefer Shimano front shifting performance from it. As it’s a travel bike lack of wires over front shift is the order of priority, but for a conventional frame it would be reversed.

  • Yeah I've thought Shimano might simply think that a single battery is optimal somehow.
    But let's face it, most folk want the complete wireless aspect, if you have the choice no wires would likely win.

    Charging etap is also very simple. I'd guess if Shimano go with wires to a single battery then it would probably stay in place and be charged through a port on the mech. For me etap would win again in that scenario.

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