Originally Posted By: Mark_R

For a home/vehicle setup, there are a number of DIY chargers that use 4+ D-cell alkaline batteries (3-4 times the capacity of AA batteries) in series with a 5V regulator and a power resistor. Alkaline battery shelf lives have reached the point where they are now viable for extended storage.


I have seen these on the internet and look easy to make. If I were to go this route though, I would use a 12 volt SLA (Sealed lead acid) battery which come in a number of different amp hour capacities and can also be readily stored and recharged.
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Earth and sky, woods and fields, lakes and rivers, the mountain and the sea, are excellent schoolmasters, and teach some of us more than we can ever learn from books.

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