|
Li-co or Li-po Lithium batteries are great, definately, very energy dense and great energy output with minimal voltage sag (in comparison to alkaline). Problem is the 18650 or 14500 lithium batteries are 3.7v nominal (4.2v fully charged), so they are not a suitable replacement for 'standard' AA batteries. These are also serious hobbiest items: walk into a battery store asking for a lithium 14500 or 32650, and a CC / CV recharger and you'll get no response.
As far as I know, the mainstream 'lithium' AA batteries are not rechargable (they are also prohibitively expensive.)
Again, watch out for outdated knowledge. A set of eneloop's will hold power after 5 years and is a much better choice for any standby flashlight (they also never leak). There is very little argument for primary (non-rechargable) alkaline batteries, and definitely none in the case of a regular use item which will have you routinely cycling your cells.
I can't post links yet, so combine all that stuff below and there's one of many great posts given some insight as to why the eneloop is definitely your answer right now.
www . candlepowerforums . com
/vb/showthread.php?245951-Rechargeable-AA-battery-shoot-out
www . candlepowerforums. com
/vb/showthread.php?149804-Eneloop-Self-Discharge-study
|