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HP EliteBook is a line of business-oriented laptop computers made by Hewlett-Packard (), [1] marketed as a high-end line positioned above the ProBook series. [2] The line was introduced in August 2008 [3] [4] as a replacement of the HP Compaq line of business laptops, and initially included mobile workstations until September 2013, when they were rebranded as HP ZBook.
A battery balancer or regulator is an electrical device in a battery pack that performs battery balancing. [2] Circuitry that includes designs to balance cell charges during battery pack recharging may be either active or passive in its design, [ 3 ] and is most often found in lithium-ion batteries , [ 4 ] e.g., for laptop computers, electrical ...
Determining the charge remaining in many battery types not connected to a system that monitors battery use is not reliably possible with a voltmeter. In battery types where EMF remains approximately constant during discharge, but resistance increases, voltage across battery terminals is not a good indicator of capacity.
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.
Using too great a charge current on a small battery can lead to boiling and venting of the electrolyte. In this image a VRLA battery case has ballooned due to the high gas pressure developed during overcharge. The capacity of a lead–acid battery is not a fixed quantity but varies according to how quickly it is discharged.
A typical 12 V, 40 Ah lead-acid car battery. An automotive battery, or car battery, is a rechargeable battery that is used to start a motor vehicle.. Its main purpose is to provide an electric current to the electric-powered starting motor, which in turn starts the chemically-powered internal combustion engine that actually propels the vehicle.
The lithium–sulfur battery (Li–S battery) is a type of rechargeable battery. It is notable for its high specific energy . [ 2 ] The low atomic weight of lithium and moderate atomic weight of sulfur means that Li–S batteries are relatively light (about the density of water).
Some HP Laptops including several HP Envy laptops were recalled due to defected batteries placed. In 2019, HP encouraged their customers to check if their battery was malfunctioning and if so, to get a refund with the quote "HP urges customers to recheck all potentially affected products." The HP ENVY laptops entitled to a recall are: HP ENVY m6