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Battery charger

Discussion in 'Car Repairs / Maintenance' started by EFLImpudence, 26 Nov 2017.

  1. EFLImpudence

    EFLImpudence

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    My battery charger instructions state (in not at all prominent text) that it is not suitable for maintenance-free batteries.


    Does this mean any battery without removable caps?

    If so, what is the difference between this charger and ones which are suitable, and
    how do I tell which charger is suitable without opening the box and reading the instructions?

    Or need I not worry about it?
     
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  3. Belle427

    Belle427

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  4. Peter.N.

    Peter.N.

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    Very interesting that. I can confirm that charge rate and maximum voltage can make a tremendous difference to the life of a battery. I have a couple of 12v 100 ah batteries as standby for my amateur radio gear, I bought them secondhand about 10 years ago and have used a voltage regulated charger st at 13.2 volts as 2.2 volts is what a fully charged cell should read, possibly they are being slightly undercharged but its certainly done nothing to shorten their life and as they are on float charge it is sufficient.

    I did have four of them, I let my son have one for his pressure window cleaning system, a fairly fast charge every night resulted in it lasting about three months, that was a couple of years ago and the others are still going fine.

    He bought a couple of replacements and they lasted no time at all but the last one he bought I made a voltage regulated charger for and he has been going fine for a year of more.

    Peter
     
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