On Tue, 1 Aug 2006 20:19:47 +0100, Tony H. wrote:
> | Just curious, but are you saying that there are places to buy AA
> | batteries, but no places to charge Li-Ion batteries? If I were going
> | mountaineering for long periods of time without access to stores or
> | power, I'd insist on Li-Ion batteries, as they are so much more dense in
> | terms of power/weight and power/size.
> |
>
> I take lithium batteries with me from the UK, but am away from a power
> supply for up to 6wks and in the extreme cold typically -15C the batteries
> discharge much more quickly but at least I can keep some AAs on my person to
> benefit from body heat.
In such cold weather consider using non-rechargeable lithium AA
batteries instead of alkaline or NiMH batteries. Keeping the camera
close to your body may still be warranted, but only for the camera,
as lithium AA batteries are better suited for cold weather than even
rechargeable Li-Ion batteries. They're rated for use down to -40ºC,
and by a coincidence it's the same temperature as -40ºF.
A slight drawback is that they're more expensive, but they have
other benefits in that AA lithium batteries weigh much less than
alkaline and NiMH batteries, and that when used in some cameras,
lithiums can last 2 to 3 times longer than alkaline AA batteries.