So I commute year round in Calgary and that means cold and dark. I can't seem to find a tail light that isn't disposable garbage and will actually hold up to a few years of use.

Yes you can basically buy tail lights in bulk off Amazon - but I hate tossing dead junk in the trash. I would rather pay more for a light that lasts.

My perfect light would use replaceable 18650 (or whatever size) lithium ion cells, or at least have USB-C with pass-through charging (so that I can run it off an external battery in a pinch).

For front lights I use Outbound Lighting and they are perfect - long battery life, great performance, pass-through charging, works in the cold. Unfortunately Outbound doesn't make tail lights. I've begged.

So anyone have a tail light that they LOVE?