Rejuvenating a battery

CurrentObsession

Petty Officer 1st Class
Joined
Aug 26, 2011
Messages
234
Anyone ever have success getting a battery to decent cranking power by simply replacing the electrolyte fluid and charging it?
 

Ernest T

Petty Officer 1st Class
Joined
Aug 29, 2009
Messages
367
Re: Rejuvenating a battery

If its a flooded type battery, chances are poor to recover it if it was completely discharged. I'd say time for a new battery.........get an AGM this time. They have a much better survival chance after a deep discharge.
 

Fordiesel69

Lieutenant Junior Grade
Joined
Sep 18, 2009
Messages
1,146
Re: Rejuvenating a battery

Anyone ever have success getting a battery to decent cranking power by simply replacing the electrolyte fluid and charging it?

Never. The decay is in the plates, not the electrolyte. As I understand it, as a battery is drawn down, the sulfates from the electroylte attach to the plates, when the charge is applied the sulfates release from the plates back into the electrolyte, leaving a bit still "stuck".

Over the life, the plates get sulfated and act as an insulator, therefor end of life
 

venxxxxx

Seaman
Joined
Apr 25, 2011
Messages
55
Re: Rejuvenating a battery

One of my uncles refurbish batteries for a living. As a child, I saw how he did them... you would have to empty the case, gut it out then buy new plates then pour the acid in and plug in for charging....
Its better to just get a new one unless your looking to do that for a living.
 

Truthbeknown

Recruit
Joined
Sep 11, 2013
Messages
2
Re: Rejuvenating a battery

Never. The decay is in the plates, not the electrolyte. As I understand it, as a battery is drawn down, the sulfates from the electroylte attach to the plates, when the charge is applied the sulfates release from the plates back into the electrolyte, leaving a bit still "stuck".

Over the life, the plates get sulfated and act as an insulator, therefor end of life

There is another solution to this sulfation problem. Most lead acid batteries can be rejuvenated to a new like condition as long as there is no short in the battery. You have to check one or both of these videos by the battery guru Peter L.
find videos here: Battery Secrets & Battery Rejuvenation by Peter Lindemann :)
 

Truthbeknown

Recruit
Joined
Sep 11, 2013
Messages
2
Re: Rejuvenating a battery

Anyone ever have success getting a battery to decent cranking power by simply replacing the electrolyte fluid and charging it?

Replacing electrolyte is not a good idea as the battery has the perfect chemistry. All you ever want to do is add distilled water and use a rejuvenator. You can rejuvenate batteries now with a battery rejuvenator. These are new. Learn about them by watching Peter's videos Battery Secrets & Battery Rejuvenation by Peter Lindemann :joyous:
 
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