Re: (ET) ryobi [Virus checked]

["Dave Reuter" <david reuter iavinc com>]

If your 12V battery was measuring 2.2V it is dead beyond death. You can get
a charge on it but it will only be a surface charge. It will die in matter
of seconds. It is my understanding that if your battery is below the 0%
state of charge then it will more than likely be unrecoverable.

If I miss read what you were stating my apologies

Here is a open circuit measurement chart to go by that I found.

SG        Volt         SOC
1.265    12.66       100%
1.225    12.45       75%
1.190    12.24       50%
1.155    12.06       25%
1.120    11.89       0%

SG is Specific Gravity
SOC is State Of Charge

Dave Reuter




                                                                           
                                                         
                      Dave & Debbie Barden                                 
                                                         
                      <daveb seanet com>               To:       <czach 
computer org>, <wombat dssinternet net>,                    
                      Sent by:                          <elec-trak cosmos 
phy tufts edu>                                            
                      owner-elec-trak cosmos ph        cc:                 
                                                         
                      y.tufts.edu                      Subject:  Re: (ET) 
ryobi                                                     
                                                                           
                                                         
                                                                           
                                                         
                      05/19/2003 02:26 AM                                  
                                                         
                                                                           
                                                         
                                                                           
                                                         




54?!  how did you wire them, what's the pack voltage?

this wkend I just got a sears cordless mower running that I rescued from
the
dump.  The 24v charger came in the mail friday, the 12v sealed batts
measured
2.2volts each!  but after 2 days on the charger came up to 12.7v.  I ran it
but
only for a coupla seconds.  my charger did the same thing only the green
"ready" led ever lit up.  the red "charging" led never has come on.

there's not much grass here in my neighborhood here in town to test it on
so
I'll have to wait till next wkend when I bring it the farm.  I plan to use
it
for the lawn in close to the house and flower beds and the E-trac on the
other
1/2 ac of lawn.

dave

> Could also be that after sitting for years the battery is fully sulfated.
>
> If it's a 12 volt 26amp/hour battery then they cost $50 new from
> www.surplusev.com. I just bought 54 of them for my electric car; really
nice
> batteries. Have been thinking of trying to run the E20 with a set of six
of
> them :-)
>
> Chris
>
> ----- Original Message -----
> From: "Neil Dennis" <wombat dssinternet net>
> To: "Elec-trak" <elec-trak cosmos phy tufts edu>
> Sent: Monday, May 19, 2003 8:42 AM
> Subject: (ET) ryobi
>
>
> > I've got probably the same model, the battery indicated "charged' after
> > running the charger for several hours but wouldn't start the mower.  If
> > I remember, I found an open connection somewhere, after fixing, the
> > mower would run with the charger plugged in but about a minute on the
> > batt.
> >
> > It sits in my garage, too cheap to try and find a new batt, wonder what
> > they cost.
> >
> > wombat
> >
> >
> >
>
>
>