[OSM-talk] OT: Best rechargeable batteries for low temperatures?

[Bruce Cowan]

On Wed, 2007-01-31 at 09:40 -0400, Steve Bromwich wrote:
> Hi,
> 
> I was slightly disappointed this morning after a mapping session to find 
> that the rechargeable batteries in my GPS had died about 15 minutes after 
> setting off - despite reading 75% charge last night. I suspect that the 
> batteries got unhappy about the temperature (low of around -18C), so I'm 
> wondering if anyone has any recommendations for either brand or type of AA 
> battery to use in low-ish temperatures. The batteries I was using were 
> Rayovac 15 minute rechargable NiMH units, that hold a fairly beefy 2000mAh 
> (although only at the usual 1.2V). Searching around on the net I can't 
> find any specs on operating temperatures for this or any other AA battery 
> - just for industrial scale batteries (wet cell and the like).
> 

My GPS's manual suggests that Lithium batteries in below freezing
conditions.

-- 
Bruce Cowan <bruce.cowan at dsl.pipex.com>