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AHRAmerican Historical Review (Journal of the American History Association)
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AHRAcademy of Human Rights
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AHRAfter Honeymoon Reception
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References in periodicals archive ?
The machine is equipped with threephase asynchronous motors without brushes, 48V batteries with an output of 450 ampere-hours, and a built-in charger with a charge storage capacity of up to 16 hours, ensuring ecologically sustainable operation.
A Cessna 172S has a standard battery that offers 11 ampere-hours of power.
This allowed EnerSys to check exactly how many Ampere-hours Gaer needed, the charging times and how often they had to change the battery.
Featuring a new generation of batteries with a cell capacity of 94 ampere-hours (Ah), as used in the current BMW i3, the range has been significantly extended.
This confidence comes in part from Hilti's April 2016 introduction of a new battery range for its hand tools that has nearly doubled their capacity from a range of between 1.6Ah (Ampere-hours) and 3.3Ah, to a range of between 2.6Ah and 5.2Ah.
The sum of the molecular masses of the reactants is 642.6 g/mol, so theoretically a cell can produce two faradays of charge (192,971 coulombs) from 642.6 g of reactants, or 83.4 ampere-hours per kilogram (or 13.9 ampere-hours per kilogram for a 12-volt battery).[citation needed] At 2 volts per cell, this comes to 167 watt-hours per kilogram, but lead-acid batteries in fact give only 30-40 watt-hours per kilogram due to the weight of the water and other factors.
This biobattery can get an energy-storage density of about 596 ampere-hours (A/h) per kg - an order of magnitude higher than the 42 A-h/kg energy density of a typical lithium-ion battery used in various gadgets.