still usable ...

The combination I could have saved me. The taillight example I here only as a replacement tail light in my bicycle bag have. A 5 Euro taillight doing here still its services and just will not go wrong :). The luminosity is significantly stronger than the offered here.

One needs for the taillight "Lady n" batteries. I had to buy an adapter for it to load the accus at all in my charger can me. Lady batteries are of size not standardized. My first battery was buying so unfortunately flawed.

The Ixon IQ is useful from the Aperture ago. Here you have the problem that if one leans forward over the handlebars, is blinded by the light. Since I ride bike, I have the problem often.
The holder of the Ixon IQ is probably the biggest, but certainly not the only weak point. The other weak point is the battery case. The spring-loaded housing have to press laboriously together until it snaps. So it has a permanent voltage.

In retrospect, it annoys me that I have kept the set. As already mentioned above, I use eh only the Ixon IQ ...

Mfg.