I had a used Quarq power meter crankset fitted to one of my bikes yesterday. That was to replace a used 105/4iiii power meter crankset which didn't work.
I just put a new battery in the Quarq and tried it out but that didn't work either...
WTF!!!
The 4iiii had been an
ebay punt. It was sold cheap as being faulty but I have been lucky with this kind of thing before and fancied my chances. I was hoping that it would be nothing worse than a flat battery or a bent battery contact***. Nope!
The Quarq though was a donation from my cousin. He had been using it right up to the point that he bought a newer mode. It really should have been okay!
I tried a second new battery. No joy.
I was stumped. And then I had a sneaky suspicion...
The two new CR2032 batteries had come from a strip of 5 bought cheap from a local market stall. Was it possible that they were all useless?
I took the little backup front light off my bike. That is powered by two CR2032 batteries. I checked it... Yes, very bright - those batteries were
definitely good!
I put one of the good batteries into the power crank and gave the cranks a spin to see what happened. And...
Yes - it powered up and passed its self test.
I just put the bike on my old turbo trainer, paired the Quarg with my Wahoo Elemnt Bolt, and did a quick test ride.
The power meter confirmed a long-held suspicion that old cyclists should not sprint up to 350 W from a cold start shortly after eating!!
Apart from nearly having a chat with Hughie and Ralph, all is good!
Just one thing though... I wonder if the 4iiii power meter would
also have worked with the good battery?
*** Honestly, some people are really impatient and/or incompetent and give up too easily. A mate bought an Apple Mac for a pittance for spares but it turned out to just need a new mains fuse! I got a Google Pixel phone at a bargain price because its microphone was broken. That turned out to just be fluff bunging up the microphone...