Re: sealed (air tight) rechargable battery technology
- From: Ian Stirling <root@xxxxxxxxxxxxxxxxx>
- Date: 02 May 2005 09:33:10 GMT
Ken Smith <kensmith@xxxxxxxxxxxxxxx> wrote:
> In article <426e9d1f$0$83051$ed2619ec@xxxxxxxxxxxxxxxxxxxxxxxxxx>,
> Ian Stirling <root@xxxxxxxxxxxxxxxxx> wrote:
> [... batteries in nasty environment ...]
>
>>Actually, lithium works quite well for this.
>>The lower the average charge state is, the greater the cells life.
>>As long as you have proper control, and don't overdischarge (under 3V)
>>or overcharge (more than 4.2/43V), and match the cells right, lithium
>>could be a fairly good match.
>>
>>Cost is of course a problem.
>
> The Lithiums I was looking at didn't like the cold and yes were very
> costly.
AIUI, only charging at very low temps is a problem.
> I could also never get it on paper that they had solved the "exploding in
> flames" problem on the higher power ones. I could for the smaller ones
> though.
As long as you don't screw up on the charge control, or overheat
them by packing too densely, or not taking care of temperature
and charging, or discharging, they are fine.
> In the end SLAs just looked like the right one to pick.
Still good, in many cases.
Annoyingly heavy in many others though.
.
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