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    is it possible to charge a single Sulfated cell directly from a series of cells that are internal to a 12V FLA lead acid battery?

    hi, Is it possible the way we can measure the voltage across cells in a FLA battery, we can also charge the individual cells? before posting this I looked over some battery diagrams. I also tried to search this solution over the internet, I could not find any clue. we can easily find chargers to...
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    One cell dead but voltage not Dropping below 12volts, How??

    Sadly, I couldn't recover it, I did not have enough time to disconnect my house from mppt and connect it to the battery. I connected it to a 100watt panel directly at someone else's house, it may recover but could take so many days to do so. Also I had an idea in mind that the way we measure...
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    One cell dead but voltage not Dropping below 12volts, How??

    I tried connecting it to my mppt, but only supports equalize upto 16.5volts, bulk 16.5volts and float at 15.5 volts. when I put it on charge, it quickly reached 16.5 and came to float 15.5volts as charging current was high. but in this process I notices that the dead/weak cell starts bubbling...
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    One cell dead but voltage not Dropping below 12volts, How??

    I added mixed solution because I heard the sulfuric acid gets crystallizes with lead to form crystals, so charging not* happening due to that. I was confused if I should add distilled water to make it dissolve or acid to make it charge :/ I want to revive it because I dont want to return it to...
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    One cell dead but voltage not Dropping below 12volts, How??

    Thankyou for your response, I expected much more info from you on why that's happening, how could only 5 cell battery provide such a high cranking current to start the engine? anyways, is there any ways I can recover it? can I put it on solar mppt at 16volts 10A?
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    One cell dead but voltage not Dropping below 12volts, How??

    Okay, thanks I have a mppt, the battery is 35Ah, how much current do you think I should provide it? I can take it to 16volts using it. Although I tried connecting it directly to a 60watt 20volts solar panel for 2 3 hours and the last cell didnt improve. and what do you think for how much time I...
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    One cell dead but voltage not Dropping below 12volts, How??

    Hi, greetings!My 12volts 35Ah car lead acid battery was sitting too long and I found it with just zero charge left around 5 6 volts. I peeked into it and saw the cell near to the negative terminal has some white deposits in it, probably it is sulfation (90% sure). The battery is 30+ months old...
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    Mixing a 4 year old FLA battery with a new one in Series 24Volts

    I would like to keep talking on it sir, I want to learn, but the purpose of it is to be efficient to save some costs: 1. I'm 90% sure the new battery that came out of box was also charged from the factory too. But the load tester meter has readings mentioned on it, based on that I can confirm...
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    Mixing a 4 year old FLA battery with a new one in Series 24Volts

    I think you're going too much towards the ideal way, in the first place this practice was to save costs. 1. Does load testing a battery with a 100Amps load doesnt tell about the condition of batteries? I checked and the voltage dropped no less than 11.65. you can call it cranking load test. 2...
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    Mixing a 4 year old FLA battery with a new one in Series 24Volts

    I appreciate your response to my post and the corrections. I was not aware about this thing that I need to fully charge each of them before connecting. Is it because I need to see the full charge voltage of them? About maintenance, in the initial time I was not much paying attention and...
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    Mixing a 4 year old FLA battery with a new one in Series 24Volts

    Hi, I'm from India using Flooded lead acid batteries, I have the battery so called a solar c10 150AH battery, where they claims 60months warranty and 96Months of lifetime. I recently moved to a 24 volts system, due to budget issues I mixed the 4 years used lead acid with a new one of the exact...
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    overloading a mppt through 'WATTs'

    I'm from India having same 24v system with lead acid batteries and an ashapower 40amp mppt solar charge controller listed here https://ashapower.in/product/pdk173 (this one is 1200watts for 24v, mine is 1100watts for 24v which is delisted). I am currently have 550watt panels which is perfectly...
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    PV Overload question (1200W on a Rich Solar 40A MPPT - rated for 1100W)

    @JMT I'm from India having same 24v system with lead acid batteries and an ashapower 40amp mppt solar charge controller listed here https://ashapower.in/product/pdk173 (this one is 1200watts for 24v, mine is 1100watts for 24v which is delisted). I am currently have 550watt panels which is...
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