I really don’t like leaving a trail of dead batteries in the wake of my touring. I have been using
Blackburn Fleas - two 2.0 rear lights and 1 Super Flea headlight. They are easy to recharge using my solar charger or shore power. I see they have come out with a Super Flea tail light, which will get my consideration. The Super Flea headlight is bright enough to see the road clearly at night and be seen when flashing during the day. I tend to have one of the rear Fleas blinking anytime I am on a busy road day or night. The Super Flea can be used with a separate headband kit as a campsite headlamp. I have been using them for a number of years and find them rugged, water resistant and very lightweight.