SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Non-Tech : Alternative energy
 Public ReplyPrvt ReplyMark as Last ReadFilePrevious 10Next 10PreviousNext  
To: Big Bucks who wrote (2986)4/26/2006 11:22:25 AM
From: Bid Buster  Read Replies (1) of 16955
 
All EV's are toys.

Assume a 100 mile range ev results in a battery discharge rate of 80% = a battery charge cycle life of 300 charge cycles, so assuming its a daily driver expect to replace batteries once a year.

Now if that same EV is only driven 20 miles per day with a battery discharge rate of 20% the battery charge cycle rate can be 1500 cycles so battery life could be 5 years, but then again just one dead cell in a battery bank can kill the whole bank in a very short time so this level of battery life would probably be the exception.

I'm sure someone will chime in and say new battery technology results in better charge life cycles, and to that I say its all hype and one isn't looking at the real world data that says battery life is no where close to those claims.

And one last thing, the claims made for battery life cycle are based on a perfect charge that in the real world can not be done due to the time required to perform a proper absorbtion and equalization charge cycle, thus the batteries never receive a full charge and results in shortened battery life from sulfation.

So factor in electrical use for charging plus conversion loss of %20 (or more) plus battery cost per charge cycle.

So where is the savings from a car that can only be driven 100 miles per day, will cost $4000+ to replace batteries not counting the $.12kwh to charge vs. a 40mpg car driving 100 miles per day that will use 912.5 gallons of fuel in a year and even at $3 a gallon would still only cost $2737.50?
Report TOU ViolationShare This Post
 Public ReplyPrvt ReplyMark as Last ReadFilePrevious 10Next 10PreviousNext  

HomeMailHotSubjectMarksPeopleMarksKeepersSettings
Terms Of UseContact UsCopyright/IP PolicyPrivacy PolicyAbout UsFAQAdvertise on SI
© 2025 Knight Sac Media.  Data provided by Twelve Data, Alpha Vantage, and CityFALCON News