LiFePo4 are not the same chemistry as the batteries in your Segway or
laptop. Your experience with a totally different chemistry (LiCoO2,
LiMn2O4) is meaningless. LiFePo4 have far superior cycle life then
previous lithium chemistries. The only common shipping consumer
device that use LiFePo4 are some very high end power tools (Dewalt)
and OLPC (One Laptop per Child) They both choice this chemistry
because they don't want to replace the batteries.
But the comment about not letting them go completely flat is valid but
unlike the Segway batteries the LiFePo4 will not self discharge quickly.
On Jul 21, 2009, at 6:17 AM, Matthew Geier wrote:
> vectorges@aol.
> > I work part time for Segway dealer. Our batteries are lithium ion
> and our
> > tech contact has a pair that are seven years old and working fine.
>
> Conversely i'm finding that laptop computer Li-ion's are currently
> living 18 months to 2 years before they have lost so much capacity
> as to
> be useless. And these are batteries with a built in micro controller
> and
> memory chip so the onboard charger can treat them properly.
> The Li-ion battery in my GPS lasted only 12 months (Nokia mobile phone
> type battery).
>
>
>
[Non-text portions of this message have been removed]
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