Joined: Jan 2009
Posts: 44,231
Likes: 6,489
From: New York, NY, and High Falls, NY, USA
Bikes: 1962 Rudge Sports, 1971 Raleigh Super Course, 1971 Raleigh Pro Track, 1974 Raleigh International, 1975 Viscount Fixie, 1982 McLean, 1996 Lemond (Ti), 2002 Burley Zydeco tandem
Tail lights don't consume much power, so it seems that any kind of battery is OK. I don't have to recharge my NiMH AAA's often in my Planet Bike tail light.