Quick! Question about Garmin 305

[OakLeaf]

Apparently there are known issues with the cadence sensor. Mine quit working for a couple of weeks this winter. It wasn't the receiver, because it was picking up another guy's cadence sensor just fine. I tried four different batteries and it still didn't work. Sometimes the setup light would flash when the crank went by; sometimes not; one time it flashed for no apparent reason when the crank wasn't even moving. So I called Garmin and they sent me a new sender, no questions asked.

Then before I could install it my old one started working again - although it has quit briefly twice more, I'm still using it.


ETA: The cadence sensor is the same across all the models, but the known issues with the 705 are different from the ones with the 305. On the 705, there was a firmware issue with random shutdowns that's been resolved. On the 305, it was a hardware issue.

I haven't actually used the 705 on a long enough ride yet for the unit battery to become an issue - is that what you mean? The longest I've had it turned on was about 8-1/2 hours. On my old 301, the predicted battery life of about 13 hours was pretty accurate. Both of them will charge overnight with a USB battery pack on multi-day rides.

I just started tracking sender battery life (I love SportTracks), so it'll be a while before I know how many hours they're good for. But so far, I've burned up two cadence sensor batteries by forgetting to park with the crank turned away from the sensor. For the HRM on the 301, I would guess I've been getting pretty close to Garmin's predicted 180 hours, maybe a bit less; but the 305/705 have a different HR strap, so that may be different.

I find the 705 very easy to set up and use.