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[meepmeepmayer]

As long as you use the wheel, everything is good. It (more precisely the battery) will stay warm unless temperatures are extreme. You will get lower range and reduced power margin due to the colder battery. But since your commute is laughably short in EUC terms, that's not an issue. I cannot think of a temperature that would cool the battery down enough to pose a problem but not be crazy cold enough so you yourself no longer want to stand on the wheel for even a single kilometer.

Quick googling shows the V10 is rated for -10°C.

The important part here is using the wheel. Storing the wheel at cold temperatures is what to watch out for, because the battery will cool down fast if not in use or if it is cold from the start. So do not store the wheel in a car trunk or your garage (unless the garage is at room temperature), but inside at 15+°C. And beware of stops on your way to work that are long enough so the battery gets too cold.

Yet even then, unless the battery freezes (not sure when/if that happens), the wheel will not be damaged. You may just be surprised by an unexpected overlean, but I believe even that is extremely unlikely for this short route and these low speeds. The above advice is probably more suitable to looooooooong ride (if at all)

@winterwheel has a lot of experience with cold weather riding, and it went well every time.

TLDR: Start with a warm battery and keep it warm. Zero problem for your short route. You'll die before the wheel does.

Edited December 18, 2019 by meepmeepmayer

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[meepmeepmayer]

No problem then. In short, a very cold battery might make the wheel give up when you start riding and accelerate, or accelerate strongly on the way. That's all. As long as the battery isn't cold...

Someone once posted about storing a wheel outside for hours on a winter evening and then overleaning it on the way home when it could not do the usual acceleration. Quite an extrreme situation.

[winterwheel]

I already have a month of commuting rides at -10c to -20c on two different wheels, no temperature-related issues whatsoever for my 6km-ish (each way) commute.

I never leave the wheel outside when I am not riding it.

For longer rides on colder days I'd use the app to check the temperature / battery levels once in a while especially when getting to know your wheel.

The bigger issue is keeping yourself warm. On my -34c run, travelling at 30km/h, the windchill factor made it the equivalent of -57c. At those temperatures, even for my half hour run, my toes were in danger of getting frostbitten due to their being basically immobile.

 

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[winterwheel]

1 minute ago, /Dev/Null said:

Have you look into battery/heated socks/boots/shoes?

For me I have this 1km to go either walking or riding, and I figure riding is more fun & puts me in the cold less.

If my commute was any longer I would; as it is I'm super comfortable down to about -25 while on colder days my trip is over before it gets to be a problem.

[LanghamP]

It takes at least nine hours to thaw out a wheel at room temperature that's been stored overnight outside (in a car) in below freezing weather, and that's with the best estimate.

Some wheels such as the Segway will warn you that they are too cold, and then refuse to balance, while others such as the Gotways give no such warning but then act dangerously drunk while riding them. In my opinion if you accidentally left a wheel outside then bring it inside and don't even try to ride it for a day.

[Aneta]

I didn't see it mentioned yet here, but charging cold li-ion battery is black death. So, thaw the battery for several hours after cold ride before plugging it in.

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[winterwheel]

I've often plugged in my wheel right after I coming inside from a cold weather ride, the batteries aren't cold because they've been working so hard to carry 250lbs of person and snow gear through the snow. I've had no noticeable issues with that as far as I can tell.  The ACM2 is into its second winter doing this (closing in on 5000kms of mostly winter riding for that wheel) and is holding up like a champ. 

The main problem to avoid is getting water on the charger / charge port since snow gets all over everything and starts melting the instant you bring the wheel inside.

If I ever leave it outside and turned off in subzero temperatures for any length of time (I would never do this, but you never know) I would let the wheel warm up before trying to charge it.

Edited December 19, 2019 by winterwheel

[mrelwood]

 

On 12/18/2019 at 4:36 AM, meepmeepmayer said:

Someone once posted about storing a wheel outside for hours on a winter evening and then overleaning it on the way home when it could not do the usual acceleration.

I actually put myself in the same situation yesterday without realizing. After a 20 minute ride I stored the wheel in a car that had already cooled down a good bit. After two hours I rode the wheel back home for another 20mins, but I was tired enough not to ride aggressively. The battery was at 80%, and it was perhaps -3•C outside when I came home. Not an extreme case by any means, and the MSX felt like it always does. But a good reminder that these things can happen without realizing.