Re: Amazing D cell discovery!
My lithium cells were normal AA replacements, nominally 1.5 volts but significantly higher than that off load, just over 1.8V from memory.
These lasted longest in the very low drain clock in my one off experiment. The mouse, which is still 'low drain' in the big scheme of things proved disappointing and here the lithium gave only a 50% improvement over alkaline.
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