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A battery charger, recharger, or simply charger, [1] [2] is a device that stores energy in an electric battery by running current through it. The charging protocol—how much voltage and current, for how long and what to do when charging is complete—depends on the size and type of the battery being charged.
Dell Precision is a series of computer workstations for computer-aided design/architecture/computer graphics professionals, or as small-scale business servers [citation needed]. They are available in both desktop (tower) and mobile (laptop) form.
A mid-range model has a quad-core i7-4702HQ CPU, 3200×1800 PPS (similar to IPS) touchscreen, 16 GiB RAM, GT 750M GDDR5 GPU, a 1 TB HDD with 32 GiB SSD cache, and a 61 Wh battery. The high-end edition is mostly the same as the mid-range model but replaces the HDD with a 512 GB mSATA SSD and adds a larger 91 Wh battery in place of the 2.5" drive.
A battery eliminator is an adapter intended to allow a device intended for battery operation, such as a radio, to be operated from an AC outlet. [10] All radios, except crystal sets, used inconvenient and messy vacuum tube batteries until the mid- to late-1920s. Battery eliminators that plugged into light sockets became very popular. [11]
As a result of this current, the battery absorbs a charge and its voltage rises. The charger limits the maximum voltage to U max, a constant or temperature-dependent maximum, typically around 2.4 V per cell. Once the U max voltage is reached, typically when the battery is charged to 70–80% of its capacity, [1] the charger enters the Uo-phase ...
A lithium-ion or Li-ion battery is a type of rechargeable battery that uses the reversible intercalation of Li + ions into electronically conducting solids to store energy. In comparison with other commercial rechargeable batteries, Li-ion batteries are characterized by higher specific energy, higher energy density, higher energy efficiency, a longer cycle life, and a longer calendar life.
57 Wh, 3-cell battery or 86 Wh 6-cell battery‡ 1.9 kg 357 x 226 x 20.9 1 × 3.5mm audio jack 1 × USB-C 3.1 Gen 1 port 1 × USB 3.1 Gen 1 port 1 × USB 2.0 1 × HDMI 1 × SD card reader 1 × AC adapter plug †: This port is only on devices without world-facing cameras. ‡: The 86Wh option is only available for devices with SSD.
The watt, kilogram, joule, and the second are part of the International System of Units (SI). The hour is not, though it is accepted for use with the SI.Since a watt equals one joule per second and because one hour equals 3600 seconds, one watt-hour per kilogram can be expressed in SI units as 3600 joules per kilogram.
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