Re: [PSUBS-MAILIST] Batteries Bank

[irox <irox@ix.netcom.com>]

That would be roughly 280 of these per hour of operation:
http://store.wellingtongolfcars.com/ProductInfo.aspx?id=6282480

Costing $21,000 and weighing 10400+kgs (for one hour of operation
at 250KW).  This is just a rough estimate (not count discharge
rate performance and system inefficiencies).

Ian.

-----Original Message-----

From: Alan James 

Sent: Sep 30, 2010 11:22 PM

To: personal_submersibles@psubs.org

Subject: Re: [PSUBS-MAILIST] Batteries Bank










Hi Jon,
That depends on how much money you want to 
spend!
Roughly you could have a 1/3rd the weight of a lead 
acid battery if you went to
Lithium, but the cost is many times more. If you 
find what type of battery you want
& go on the manufacturers site or a dealers 
site they will have an amp hour rating
wich is based on 20 hours use. There should be 
specifications to help you calculate
how many amp hours you'd get drawing over an 8 hour 
period.
Another factor coming in to the equation is " how 
hard do you want to thrash your batteries?"
If you drain them below half their capacity you 
reduce their overall life expectancy.
So say you had a 12 volt 100 amp hour battery & 
you wanted to run it to 50% over 8 hours,
you might get 40 amp hours & multiplying that 
by 12 (volts) you get 480 watts.
That means 520 x 12 volt 100 amp hour 
batteries.
That's about $250,000 worth of batteries however 
you should be able to get a good discount.
They weigh more than 30kg each so that's over 15 
ton of batteries.
Regards Alan
 

  ----- Original Message ----- 
  From: 
  Firebolt 
  
  To: Psusbs 
  Sent: Friday, October 01, 2010 6:33 
  PM
  Subject: [PSUBS-MAILIST] Batteries 
  Bank
  

  Hello, this is a short question, 250 kw electric motor 
  running  for 8 hours what type/many batteries do I need? ex. ampere Hour, 
  voltage



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