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An ampere-hour or amp-hour (symbol: A⋅h or A h; often simplified as Ah) is a unit of electric charge, having dimensions of electric current multiplied by time, equal to the charge transferred by a steady current of one ampere flowing for one hour, or 3,600 coulombs. [1] [2] The commonly seen milliampere-hour (symbol: mA⋅h, mA h, often ...
1.0 μerg (0.00010 nJ) Watt-hour multiples: terawatt-hour: TWh TWh 1.0 ...
Its capacity at 250 mA drain is 1,700 mAh at 1.5 V, less than other chemistries, limited by the low efficiency of the step-down converter. [21] Some later Li-ion AA batteries advertise their capacity in milliwatt-hours (mWh) instead of the usual milliampere-hours (mAh), so a customer's attention is drawn to the figure, typically a claimed 3,000 ...
kilowatt-hour: kWh kWh 1.0 kWh (3.6 MJ) kW.h (kW·h, kW-h) kW⋅h watt-hour: Wh Wh 1.0 ...
Shorter Li-ion cell with a step-down converter to 1.5 V, e.g. Kentli 2,800 mAh. [180] Non-rechargeable LS14500 primary cell (SAFT: 2,600 mAh, 3.6 V) [181] 14650 [182] 940–1,200 [183] 14: 65 Approximately 5 ⁄ 4 the length of a AA cell. 15270 [184] RCR2 450–600 15: 27 Substitute for CR2 primary lithium. Nominal voltage usually is 3 V. 16340 ...
All the SI prefixes are commonly applied to the watt-hour: a kilowatt-hour (kWh) is 1,000 Wh; a megawatt-hour (MWh) is 1 million Wh; a milliwatt-hour (mWh) is 1/1,000 Wh and so on. The kilowatt-hour is commonly used by electrical energy providers for purposes of billing, since the monthly energy consumption of a typical residential customer ...
A 10-ampere-hour battery could take 15 hours to reach a fully charged state from a fully discharged condition with a 1-ampere charger as it would require roughly 1.5 times the battery's capacity. Public EV charging stations often provide 6 kW (host power of 208 to 240 V AC off a 40-ampere circuit). 6 kW will recharge an EV roughly six times ...
1 terawatt hour per year = 1 × 10 12 W·h / (365 days × 24 hours per day) ≈ 114 million watts, equivalent to approximately 114 megawatts of constant power output. The watt-second is a unit of energy, equal to the joule. One kilowatt hour is 3,600,000 watt seconds.