We've got a thing for Sanyo's Eneloops. Had it ever since Sanyo
released us from the clutches of underperforming NiCad and NiMH
batteries about five years ago. Its latest AA and AAA batteries
can be recharged about 1,500 times, that's about 3 years of
continuous service and 500 more cycles than competing
rechargeables, according to Sanyo. The batteries also feature a
low self-discharge rate so they remain usable even after they've
been charged and stored in a drawer. In fact, an Eneloop will
maintain about 75% of its charged power even after three years.
Impressive, we know, and the reason they come pre-charged from
the factory for immediate use of out the box. And compared to
disposables, they're as good for the environment as they are for
your wallet over the long run.