USB rechargeable cadence sensor?
 

My head and tail lights are USB rechargeable so when I park my bike, I just plug them in and walk away. No more dead batteries! Anyway I want to add a cadence sensor to this bike, last sensor I kept going through batteries and it was a hassle. Anyone know if there is an ANT+ USB rechargeable cadence sensor? Googling turned up a lot of rechargeable bike computers, but I don't want that, just an ANT+ sensor I can pair with my phone.

Thanks!
Rob

I doubt there is any such thing.

The typical cadence/speed sensor lasts for months on a coin battery.

I've never heard of a rechargeable cadence sensor. All the ones I've seen use a CR2032 button battery (or similar). Also, unless you absolutely need Ant+, make sure that your phone supports Ant+ without the need of a dongle. I think you would be better off with a dual band sensor that also uses BTLE. BTLE will connect to any of the new phones.

I've been using my Garmin Cadence sensor for two years now and clocked over 10,000 km on it and replaced the batteries only once (last July) so it's not too hard on them.

I was gonna say-- I've replaced the battery in my wife's cadence sensor once in two years. Coin cell 2032s are typically just 220mAh, so cadence sensors clearly don't use a whole lot of power.

Garmin magnetless cadence sensor will last at least 5000 miles

I have yet to replace the battery in my Wahoo cadence sensor, but I did have to replace the battery in the speed sensor after about a year. My power meter pedals are rechargeable but I've only done it twice in 8 months. These things don't take a lot of power like lights do.

after almost 2 years, my wahoo cadence sensor is down to 15 percent, as reported by trainerroad. It still seems to work just fine. The heart sensor seems to go through batteries much faster. But even then, I'm not sure that a rechargeable battery is the way to go

I looked up how to change the battery on the cadence sensor, since it looks to be sealed. Requires prying open the case, which is not ideal. OTOH, having a door might not be any better

[bump - saw a rechargeable HRM. Same as cadence/speed -- batteries last almost forever. Yet...]

True, CR2032 last a long time. Still, rechargeable means less trash and no need to stock/carry replacement batteries.

I had to replace the speed sensor battery twice this season. Still using the same one that I had in 2018 (and earlier) from my post above.

Every cadence sensor or sensor for a wheel magnet that I have used was zip tied to the bike. USB rechargeable would suggest adding a quick release bracket to remove it and put it back in the same exact place later. Yeah, it is possible, but it adds complications.

It is rare when I need to replace a battery in a cadence or wheel sensor more than once in a season, a few times I have had to do it twice in a season but that was rare.

If the OP that posted this six years ago still has a problem, maybe try to find an old wired computer, I found the batteries in wired ones to last much longer than wireless. I often get a few years in a wired one.

Since this thread has already been resurrected...
When replacing your CR2032 battery, do NOT use the "child safe" ones with the bitter coating on them. The coating can evidently interfere with the connection.

This is what I have, a CatEye Strada Cadence. Wire is a pain to route nicely, but no batteries on the sensors. Just one in the main unit which I change once a year.

My PM is now my cadence sensor. 4iiii makes a PM that is rechargeable. Unfortunately, I bought my 4iiii PM six months too early! <grin>

My Wahoo sensors has a rubber case that is zip tied to the crankarm. The actual unit comes out easily enough. It wouldn't be that hard to charge it attached to the bike either. My Assioma pedals charge that way, and the pedals also act as a cadence sensor. I split the unit up with the cadence on my commuter bike and the speed sensor mostly on my road bike. The speed sensor goes on and off easily too.

On different bikes you have rechargeable batteries in a cadence sensor, speed sensor, and pedals?

Replaces battery trash with whole sensor trash when internal battery deteriorates or recharge connector fails for some reason.

I have the original speed and cadence sensors that came with my Wahoo Bolt, and I have a pair of Assioma pedals. Because I have the pedals on my road bike I put the cadence sensor on my commuter bike since the power meter also reports cadence. My speed sensor I mostly keep on my road bike but because it is easy to remove I'll swap it over to the commuter if I'm going to be using it more. In either case I also still have GPS speed on whichever bike doesn't have it even if it isn't particularly accurate. And the Wahoo Bolt itself I swap over to whichever bike I'm riding. I've even swapped the pedals from time to time but usually only for one ride on the commuter to see what my real power is when riding it. Oh, the Wahoo sensors are NOT rechargeable, they use 2032 batteries like most others. The pedals and the Bolt are rechargeable and the pedals last a long time on a charge. The Bolt I have to watch though to make sure it has enough power for the ride, but it charges pretty quickly.

I've thrown more coin batteries in the trash and battery recycling bin to more than make up your imagined sensors and devices with internal batteries going to the bin.

In fact I've had no failures of the internal batteries of any of my cycling devices. Even those that are more than 10 years old. I acknowledge that some people have had issues with their internal batteries on their devices. But I'd be willing to bet that those are still far fewer than the amount of coin batteries that get tossed. And even though we do toss them in battery recycling bins, I still see too many articles suggesting that the coin batteries aren't being recycled as it cheaper still to use raw materials. But hopefully, I'm just finding dated articles that don't reflect the current times.