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archer59

Resurrecting a 'dry' wet cell battery?

9 posts in this topic

I took a look at my one of my deep cycles I had in the basement all winter and when I opened the caps I did not see any water. I added distilled water and am charging it at 2 amps.

Is there any hope that it will recover?

Thanks,

Nick

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Might work but, IMO, the capacity is likely reduced quite a a bit.

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I've heard of bringing back a dry battery with new electrolyte but the strength and future life will likely be limited.

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I see a new deep cycle in my future.... grin.gif

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Thats why I like gell cell batteries. Never have to worry about keeping them full.

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Charge it up and see what happens.

Batteries plates exposed to air and or not kept charged will suffer from. sulfation build-up.

There is a charger that claims to recover dead batteries from sulfation called a pulse charger. Downside is you could buy 10 batteries for what they cost. Then theres the question, do they really work and how good?

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This tread got me thinking.

Google "Lead Acid Battery Desulfation Pulse Generator"

Anyone try have any experience with this?

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I have a charger with a desulfation option on it ,,,used it on 2 batteries ,,,worked on the 3 YO deep cycle battery ,,,didnt help my 7 YO harley battery,,,its a 24 hour process ,,after charging the deep cycle the hydrometer says its up to snuff ,,,but it wont go back in the boat for a while ,,its my spare for long weekend trips

Hope this helps

Randoid

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My charger also has this equalization function, but I've never tried to resurrect a battery. I've only used the function as periodic/routine maintenance (every 20 to 50 discharge cycles) according to the instructions.

I really like my early model MinnKota MK 330 charger. It has this feature and also pushbutton select of 4 different battery types.

Dunno why they discontinued them. I can only guess reliability issues or cost of manufacture vs margin. Hope it doesn't die for a long time...

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