Asking the hive for an experienced recommendation on a replacement headlight. I’m looking for headlight for trail use that is water-resistant (ie works in hard rain, probably IP6), has good battery life in cold weather (-10 C), and can be mounted upside down with a GoPro mount. Ideally, it is compatible with Garmin’s light network feature. The GoPro mount means it’s out of the way on a dual Garmin-above-GoPro-below mount and it’s on the bike year-round.
I had such a device, the Bontrager ION 800 RT, but it gave up over the weekend during a long ride. I’m not sure if it was the 7 or so hours of heavy rain that did it in, but it had worked well giving 80+ minutes of bright light in -10 C, in snow or not, and shorter, rainy rides for the past 15 or so months. (Coincidence or not, but my Bontrager Flare tail light also died that day. While the ION pretends like it is charging, the Flare has moisture in the lens and appeared complete dead.) The network feature is nice because it’s nice to be lazy when entering a long tunnel or night falls and I don’t need to turn on the light or turn it off when there’s adequate light once again. But Bontrager/Trek doesn’t seem to be making this product anymore.
The Bontrager replaced a Light & Motion Trail light. That worked great until it dropped below 10 C and then the battery life was about 20min. I tried several recommendations from the mfg, but whether it was the type of battery or the lack of any semblance of insulation, nothing extended the life (kudos to L&M for the support). Some of the other highly rated lights are not water-resistant. Annoying, it is rare to nearly non-existent that reviews of trail headlights do not consider using the light in wet conditions (ie including the water resistance, or IP rating) nor do they consider using the lights in cold weather.
Recommendations? What are you using?
By the way, when it’s really dark, like pre-dawn rides now and through winter, I supplement the handlebar light with a helmet-mounted light that works fantastically in wet & cold (a Lupine Piko).