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  • DIY: Squeeze Extra Capacity From Old NiCd Batteries

    The basic problem is that no Ni-Cad battery has ever been used according to the nature of the battery's charge/dis-charge cycle requirement for maximum life. If so, your power drill or appliance should automatically shut off when the cells reach .8 volts. I used to use "C" size ni-cads in an old Honeywell electronic flash unit when I used to do wedding photography. When the cells started to age, before charging normally, I would reverse charge them with my 12 volt car battery charger, I used to get the cells to work for the short periods of use that I needed and suprisingly it was a reliable scheme although not good for extending the life of the cells much farther.Of course ni-cad cell disposal is a serious problem. I am predicting that dangerous levels of nickel and cadmium s...see more »The basic problem is that no Ni-Cad battery has ever been used according to the nature of the battery's charge/dis-charge cycle requirement for maximum life. If so, your power drill or appliance should automatically shut off when the cells reach .8 volts. I used to use "C" size ni-cads in an old Honeywell electronic flash unit when I used to do wedding photography. When the cells started to age, before charging normally, I would reverse charge them with my 12 volt car battery charger, I used to get the cells to work for the short periods of use that I needed and suprisingly it was a reliable scheme although not good for extending the life of the cells much farther.Of course ni-cad cell disposal is a serious problem. I am predicting that dangerous levels of nickel and cadmium salts will eventually leak into water supplies having leached out of old failed dump sites. Make sure you dispose of cells in a manner set forth in your community for safe disposal of old ni-cad cells.HUNDFITZ

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  • HUNDFITZ followed xxlauraxx3 months ago