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Battery Acid Can i get a refill

#1 User is offline   Turner Icon

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Posted 21 February 2018 - 06:18 AM

Ive got a dead battery that was on a charger and is only holding 5 or 6 volts. (It's the type you fill with 6 cells of acid.) Can I open the top and refill with a new pack of 'cid or are the plates a one time use?
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#2 User is offline   Jim Hubert Icon

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Posted 21 February 2018 - 06:47 AM

The short answer is no. The practice of topping-up with battery acid instead of water is call "spiking", and you have to know what you are doing -- I don't.

I have had some luck reviving dead lead-acid batteries with an electronic "battery desulfator".

Battery University is a good reference: http://batteryuniver...w_to_prevent_it
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#3 User is offline   Turner Icon

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Posted 22 February 2018 - 01:31 PM

Jim, I was under the impression the battery had acid filled cells, not water. I've filled a new battery previously and had to take caution not to splash and burn.
Anywho, thanks for the input. I'm just going to use the old battery as a tester until the rest of the project is ready to go.
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#4 User is offline   ripperd Icon

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Posted 22 February 2018 - 01:43 PM

View PostTurner, on 22 February 2018 - 01:31 PM, said:

Jim, I was under the impression the battery had acid filled cells, not water. I've filled a new battery previously and had to take caution not to splash and burn.
Anywho, thanks for the input. I'm just going to use the old battery as a tester until the rest of the project is ready to go.


They do. However, acid is a solution in water. And with certain types of non-sealed batteries, the water in the acid mix would evaporate, and get low. You would have to top off the cells with distilled water.
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#5 User is offline   Turner Icon

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Posted 12 March 2018 - 12:27 AM

View Postripperd, on 22 February 2018 - 01:43 PM, said:

They do. However, acid is a solution in water. And with certain types of non-sealed batteries, the water in the acid mix would evaporate, and get low. You would have to top off the cells with distilled water.


Its an acid filled battery, not sure there was ever water put in.
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#6 User is offline   Turner Icon

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Posted 12 March 2018 - 12:30 AM

There are 6 full cells with yellow turn caps on top, the cells are full of liquids just old. I think the acid lost its effect somehow or the plates are used up.
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#7 User is offline   miweber929 Icon

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Posted 12 March 2018 - 06:14 AM

You put distilled water to fill it back up if that's what you need to do to this battery, end of story; the "acid" you put in it in the beginning is an acid/water mix, not straight battery acid.


You're overthinking this, go with the correct advice you've already been given.
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#8 User is offline   seb Icon

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Posted 13 March 2018 - 11:46 AM

Or buy a sealed cell replacement unit because jaysus fuck those old wet cells are obnoxious.
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