I'm a big lithium fan (for batteries) but I will admit I finally got a package of Eneloops and a charger last month. So far all I've done is try one to verify they're charged and functional but I do anticipate using them to displace the last few alkalines still in the house (in remotes and a couple computer peripherals).
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“I'd rather have questions that cannot be answered than answers that can't be questioned.” —Richard Feynman