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A patented charging technology for all kinds of batteries shortens battery charge times, generates no heat while charging, and extends the battery life 10-fold, to as many as 5,000 charge and discharge cycles. With nickel-cadmium (Ni-Cd) batteries, the charging time drops 90 per cent or more. The system will charge batteries up to 110 per cent of their manufacturer-rated (nominal) capacities, and restores memory-impaired batteries to 98 per cent of their former capacities. The system is easier on batteries than slow- and fast-charging methods, with over-charge and over-heat batteries by force-feeding current. Using a custom IC, the battery chargers read the electrochemical potential of a battery under charge, and determines its internal condition. They change the flow of current during millisecond-scale periods.
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With nickel-cadmium (Ni-Cd) batteries, the charging time ________________.