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Recharging Time for NiCads

Discussion in 'General Electronics' started by KellyClarksonTV, Jun 18, 2004.

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  1. I have a AA Nicad charger that charges 700mAh batteries using the 5hr rate, but
    I want to use 1000mAh batteries (same size, AA Nicad). Is it ok to recharge
    them using that, and is the charging time also 5hr or should it be longer?

  2. If it takes 5 hours to charge a 700 ma/Hr battery, the charge current
    from your charger should be around 140 ma. Most likely your charger
    is working at 150 ma or so.

    It should fully charge the 1000 ma/Hr batteries in about 7.5 to 8

    Chargable batteries have a minimum charge rate, depending on their
    specifications. For most of the AA size batteries, the minimum charge
    rate is about 60 to 80 ma. A charger working at 140 to 160 ma/Hr is
    not going to be overly stressfull for any of the standard chargable
    batteries. For most of the 1000 ma/Hr battery types, it is safe to go
    to about a 250 to 300 ma/Hr charge rate.

    I would say your charger should be okay for what you want to do.

    Jerry G.
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