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A capacitor stores half the energy when charged from a battery each and every time? - Electrical Engineering Stack Exchange
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Capacitor, Capacitive Battery Charger Circuit. | Miscellaneous Circuits and a link.
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How does a capacitor store a charge? - Quora
The Forever Rechargeable VARIABLE Super Capacitor Battery !!! : 4 Steps - Instructables
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What happens if you use a battery to charge up a capacitor fully, and then disconnect the battery, where does the charge 'go'? - Physics Stack Exchange
Designing Charging Circuit (Capacitor) | Seiko Instruments Inc. Micro Energy Division