How long should I charge AA rechargeable batteries?

Started Feb 3, 2008 | Discussions thread
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kiwiroo
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How long should I charge AA rechargeable batteries?
Feb 3, 2008

I have worked out that if I have 2300 mAh batteries and a charger that delivers 120 mA then I divide 2300 by 120 to give 19.17 hours to charge. But this assumes zero charge when I start charging. What about any residual charge in the batteries when I start charging?

How can I measure this? Or does it not matter?

I have a multi meter that I can use to measure voltage but I am not sure about measuring current.

kiwiroo

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