Quote:
Originally Posted by j.p.s
It's more complicated than that.
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Absolutely, I gave a lies for children version.
Yes, in fact in the years when I was designing and building gadgets
I only used NiMH. By volume when you are at AA, C and D* sizes they are now close to Lithium capacity especially after 200 full cycles. They weigh more. Lithium cells should be stored at 30% to 60% charge, but NiMH cells will keep for years if stored flat. You can still explode or set them on fire by faulty fast charging, but they don't burn so well as the Lithium. Even the primary single use coin cells can be persuaded to explode and burn.
[* Many NiMH C and D cells are using AA cells in a package, or sometimes the C cells in a D package. As an average AA is 2500mAH, a C or D of that capacity and lightweight is suspicious! There are various kinds of 9V pack, 6 cell (7.2V) or 7 cell (8.4V). The 6 cell can use AAAA cells. The 7 cells and some 6 use nearly rectangular button cells. The 9V, AAA and AAAA NiMH are best avoided. LiPoly is better for miniature packs.]