Joined: Jan 2009
Posts: 44,116
Likes: 6,330
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
If you don't trust the unit to remember your miles, it's probably safer to change the battery now as an experiment. If you want, you can put the original battery back in after the experiment.