I was just saying there is no need to speculate.It's just math and you can put 
a variable resistor in there and control the current flow while monitoring with 
a meter. 


      From: Bill Collins <ph...@bill-collins.net>
 To: paul dove <dov...@bellsouth.net>; ev@lists.evdl.org; 
ev-requ...@lists.evdl.org 
 Sent: Tuesday, June 7, 2016 8:40 AM
 Subject: Re: [EVDL] Current limiting
   
That would be an extremely short lived event. Once current starts to flow, delta
voltage will decrease rapidly.

> On June 7, 2016 at 9:33 AM paul dove <dov...@bellsouth.net> wrote:
> 
> 
> Easy to calculate
> V=IR or I=V/R
> R should be very small in the case of connecting with wires or contactors etc.
> So if the delta voltage is 2 volts and R=0.1 ohms I=20amps.
> Easy to see that currents can get very high quickly as the delta V between
> batteries grows.
> A variable resistor could be inserted to control the current.
> In the case of my care fully charge is 149.6 volts fully empty can be as low
> as 110 volts.
> delta V = 39.6 volts  if R=0.1 ohms then I =396 amps a 500 ohm resistor drops
> that to 80mA.
> 
> 
> 
>      From: Bill Collins via EV <ev@lists.evdl.org>
>  To: ev@lists.evdl.org; ev-requ...@lists.evdl.org 
>  Sent: Tuesday, June 7, 2016 7:20 AM
>  Subject: Re: [EVDL] Current limiting
>    
> The resting voltage of a lead acid battery is significantly lower than the
> voltage required to charge it. For example: a fully charged 12 volt battery
> has
> a resting voltage of 12.6, but will not draw much current unless you apply
> 13.5
> volts or so. This means that when you connect two batteries with different
> states of charge, less current flows than many people think.
> 
> Bill
> _______________________________________________
> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
> http://lists.evdl.org/listinfo.cgi/ev-evdl.org
> Read EVAngel's EV News at http://evdl.org/evln/
> Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
> 
> 
>

  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: 
<http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20160607/7aa48c63/attachment.htm>
_______________________________________________
UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
http://lists.evdl.org/listinfo.cgi/ev-evdl.org
Read EVAngel's EV News at http://evdl.org/evln/
Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)

Reply via email to