[ausev] Battery choices

[Mike Seningen]

Shame those Li's are so expensive -- Looks like Pb will run 500+ lbs 
possibly pushing 1000lbs.
1/10th that -- and one could man pack it into the office and charge them 
(thus needing
maybe only 2/3 max range). 

Maybe that drops the amount of batteries needed,
and therefore the weight and the cost -- oh my brain hurts just thinking 
about this.

On the plus side -- if you could actually pull the batteries and
haul them into the office every day you would also cut down on the need 
to visit the gym :-)

cheers,

Mike




Rob H wrote:
> As a rule, it seems that for equal capacity, pb is 10x the weight for 
> 1/10 the cost of Li.  Li options do not supply as much current so the 
> max power out (P=IE) is limited.
>
> For Pb conversions, you should estimate 1/3 of the GVW as lead.  Too 
> much will cut your range, too little will (of course) cut your range.
>
> 50 miles at highway speed will take some effort.
>
> On Sun, Jul 6, 2008 at 11:44 AM, Mike Seningen 
> <mseningen at austin.rr.com <mailto:mseningen at austin.rr.com>> wrote:
>
>
>     I'm reading -- Pb are cheaper -- but heavier
>     Li Ion are getting cheaper -- but not there yet.
>
>     One of the problems with reading internet articles -- is that
>     there are
>     rarely time stamped -- so
>     you really don't get a feel for what "not there yet" really means.
>
>     Can someone point me to prices for Pb, and Li Ion batteries/packs to
>     continue my homework.
>     I'm trying to get values to plug into a spreadsheet and see what
>     my $$$,
>     and weight deltas would be.
>
>     Assume I'm looking to do 50 miles, at highway speeds in the Hill
>     Country
>     on a single charge,
>     make up of 2 or 3 equal distant runs.
>
>     merci!
>
>     Mike
>
>
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>
>
>
> -- 
> Rob
> ____________
> Rob Hirschfeld
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