For the last six years, a set of eight Panasonic Eneloop AAA cells have been marching in pairs through the Superflashes in lockstep alphabetic order. We ride several times a week, less in the winter, and I changed the batteries once a week whether they need it or not, so they’ve gone through maybe 200 charge cycles. With four pairs and two bikes, that’s 100 cycles each.
They worked surprisingly well, all things considered.
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