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A comment on Rechargeable vs. Alkaline Batteries. Parent comment

Re:Rechargeable vs. Alkaline Batteries by bdamm on Monday July 22, 2019 @06:25PM (#20502867)
Fun hack! Do you have a line on cheap LiFPO4 or is it just to get a longer run time between swaps?
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Re:Rechargeable vs. Alkaline Batteries by p1mrx on Tuesday July 23, 2019 @12:39AM (#20504418)
I prefer not to use disposable batteries for environmental reasons. But with NiMH, a light designed for 3V will be dim, and an LCD will have low contrast. In that sense, the effective run time is zero, so NiMH is a non-starter.

I found some AAA-size LiFePO₄ cells, spacers, and a charger on AliExpress a few years ago.

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