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Thread: Car battery with possible dead cell

  1. #21
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    After watching some more YouTube videos, it looks like the key thing to be looking for in regards to the condition of a battery cell is if you can see bubbling inside the hole. Fortunately, all the cells are bubbling. At least 5 of the cells are bubbling rather effervescently. One cell isn't bubbling as much. That would seem to mean that I'll need to keep the battery on my regular charger for a couple of days. Fortunately, I have plenty of distilled water to keep the cells topped off.

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    After a couple of days being on the 4 amp charger, I noticed that the dial was staying over on the 1 amp side. So, I decided to check the voltage. Instead of getting even 10.9 volts, it was reading 8.5 volts. At this point, everything I'm reading indicates that I'm in an overcharge scenario. I assumed that hooking it up to a 4 amp charger, keeping the cells open, and just topping them off with distilled water throughout the week would help to avoid a worst case scenario. The fluids inside each cell weren't even boiling that much.

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    Safety glasses/goggles when peering onto sulfuric acid

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    Quote Originally Posted by Call_me_Ishmael View Post
    Safety glasses/goggles when peering onto sulfuric acid
    Every time I went out there.

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    Quote Originally Posted by foggy View Post
    Batteries die with age.
    Since we get most of them from...guess where!....now, many of them die even new.

    Just had one die on a 2021 motorcycle. So I bought another one, a better one, Lithium Ion...from...guess where.

    But it's the way it is. Take the battery out, if you can, and take it to a parts shop like NAPA. Take it to more than one to be sure. NAPA, O'Reilly's and Auto Zone all will test your battery.

    Then, buy one. Sooner, rather than later. Prices are going up and supply will be going down.

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    Quote Originally Posted by Common View Post
    I dont think any mechanic will agree that putting a car on a trickle charger for a year is any good for the battery....I think that alone caused your problem....a better solution is driving the car for a couple of miles every 2 weeks a car battery in good shape lasts that long, if it were me id make it 12 days. If you arent going to drive the vehicle in longer periods of two weeks...start it once a week and let it run...if you do that you might as well also take it for a short spin...dump the trickle charger

    Best solution is to put it on a trickle charger overnight or 24 hours, once a month or so.

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