Hi Ron
I woulld be very concerned with the rotton egg smell. We are very sensitive to
H2S (hydrogen sulfide) and it is veery toxic. I think that if you smell H2S
there also has to be a lot of H2 being evolved. I would say you should slow
down the charge rate, instead of 15 hr charge why not make it a 30 hour charge
and charge at 1/2 your present rate. I have had success recovering batteries
and done it much slower! If you charge rapidly you create H2 and O2 deep in
the plates, these bubbles have to escape and they lossen the plate material. I
have found that rapid charging is more a killer of batteries than it is written
about.
Darryl
--- On Fri, 1/15/10, James Surrette <ja...@surrette.com> wrote:
> From: James Surrette <ja...@surrette.com>
> Subject: Re: [RE-wrenches] High amp charge to desulphate
> To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org>
> Date: Friday, January 15, 2010, 6:31 AM
>
>
>
>
>
>
> Hi
> Ron,
>
>
>
> It has been my
> experience when sulfated batteries are pushed you do get
> higher gassing and a higher "hit you in the face"
> smell off the batteries. Keep the room well vented and
> watch the temp (max 125F).
>
>
>
> Regards,
>
>
>
> Jamie
>
> >>> Ron Young <solarea...@solareagle.com>
> 1/15/2010 1:34 AM >>>
> Just a follow-up on this. I have able to get the batteries
> to accept a higher and higher amp charge and the hydrometer
> indicates recovery is taking place. However, in the last
> 15 hour session of charging (this is being done in an
> unmonitored location overnight) the batteries off-gassed
> quite a bit. The gas was very strong rotten
> egg smell indicating hydrogen sulphite...not good
> stuff. I've never noticed this in charging batteries in
> the past even in some heavy charging scenarios you can get
> an acrid sulphuric smell but not the rotten egg smell. Is
> this because the batteries are so heavily sulphated and is
> this a normal consequence or is it an indicator of some
> other malady in the batteries?
>
>
>
>
>
>
>
>
> Ron Young
>
>
>
> earthRight Solar
>
>
>
>
>
>
>
>
>
> On 10-Jan-10, at 8:32 PM, Ron Young
> wrote:
>
>
>
>
>
>
>
>
> Some interesting things to consider,
> thanks everyone!
>
>
>
>
>
>
>
>
> Ron
>
>
>
>
>
>
>
>
>
> On 10-Jan-10, at 4:20 PM, James
> Surrette wrote:
>
>
>
>
>
>
>
>
>
> Hi Ron,
>
>
>
>
>
>
>
> Given the time in "storage" the cells will
> be severely sulfated and will not accept much current
> initially - probably 28A max (1400x2%) and 70A
> (1400x5%) will suffice once current is
> accepted. A standalone "unregulated"
> charger or constant current would be best to reclaim these
> or at least get things started.
>
>
>
>
>
>
>
>
> Regards,
>
>
>
>
>
>
>
> Jamie
>
>
> James
> Surrette
>
> Surrette Battery Co. Ltd
> 1 Station
> Rd.
> Springhill, NS, CAN
> B0M 1X0
>
> Direct:
> 902.597.4027
> Fax: 902.597.8447
>
>
>
>
> >>> Ron Young <solarea...@solareagle.com>
> 1/10/2010 5:52 PM >>>
> I have just acquired a 24v set of 1400a/h 2v cells
> that have been in storage without a charge for several
> years. They were connected up in a system that was never
> turned on (long story). I believe these batteries
> can be recovered if I can get a high enough amp charge into
> them. The battery mfg. recommends putting a 200 amp charge
> on until internal temp rises to 40 degrees C then let them
> cool and do it again, maybe 15 times, to blow the
> sulphates of the plates. Unfortunately I don't have a
> 200 amp charger but I do have an Outback 3524 inverter with
> an 85 amp charger. I'm wondering if I can force the
> inverter to maximum charge to accomplish this. I hooked the
> inverter up but the batteries only have about 10.5 v output
> from the batteries (hooked up 12 in series for 24v).
> For this reason the Outback won't power up. I am
> wondering about using a standalone charger to provide power
> to the batteries -- which will also provide power to the
> inverter -- and allow it to come on and charge. Anyone
> suggest a better way?
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Ron
> Young
>
>
_______________________________________________
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
www.re-wrenches.org/etiquette.htm
Check out participant bios:
www.members.re-wrenches.org
