I have a horrible feeling you cannot wake them without one of the chargers.
Where are you....can you put a shout out to someone nearby?

Unfortunately you need the cable to wake them up

been there done that! i made the same exact mistake as you. Right when travel mode came out i did it just for the hell of it. Well i went without power for the most important race of the year.

Just came across this thread, and had a similar situation last week - hadn't charged my assioma before a TT, and didn't have the charger in the car. You CAN charge them / wake them without a charger!

Take a normal micro USB charging cable and take it apart at the micro-USB end. There will be four wires - two are for data transfer, one is live, and one is ground. You can press the two non-data cables on the two metal circles on the pedals, and they will charge. Just sharing in case anyone makes this mistake in the future.

Another piece of advice for this thread: Just don’t use travel mode.

The pedals are pretty smart, you won’t loose much battery in normal travel.

I believe you can use the mobile app to change it

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Can confirm this works for taking the Assioma out of 'Travel Mode'. Can also confirm Favero asked me politely not to do a video on this hack in the event people blow their pedals up... 🤣

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Shane Miller - GPLama
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I understand why they wouldn't want to officially sanction this, but unless you're plugging it into some outrageously out of spec USB charger/plug (which would be a disaster with the regular cables too) it seems like there's really no way you could damage the pedals with the four wires in a standard USB-A cable. I would not do this with an USB-C cable especially plugged into a Power Delivery charger since I could see the pedals not appreciating getting 20v when they're expecting 5v.

Do the pedals have reverse polarity detection and do they only charge when you put the positive and ground cables on the correct pad?