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post #2 of Old 11-12-2011
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The D size alkaline battery is good for 17000 milli-amp hours or 17 amp-hours. Battery energy storage in various battery sizes Divide the 17-amp-hours by the number of hours the CD runs on 8 cells and you get an approximate size of the power supply that is needed. I am surprised it takes so many amperes since I have a portable CD with earphones that uses two AA batteries.
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