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Keeping your phone plugged in once it hits a full charge and consistently charging it to 100% keeps the battery at a high voltage, which causes chemical aging in the product, said Dibakar Datta ...
USB battery charging: Battery Charging v1.2 Spec. and Adopters Agreement USB Implementers Forum, 2010-12-07. EU common External Power Supply: One Charger For All.eu Archived 25 September 2012 at the Wayback Machine, European Commission Enterprise and Industry Directorate – General; MoU regarding Harmonisation of a Charging Capability for ...
Universal charger or common charger refers to various projects to standardize the connectors of power supplies, particularly for battery-powered devices. Since the publication of the USB Power Delivery standard in 2012, and the USB-C connector in 2014, USB-C has become a widespread standard for charging mobile phones.
Some devices, when plugged into charging ports, draw even more power (10 watts) than the Battery Charging Specification allows—the iPad is one such device; [107] it negotiates the current pull with data pin voltages. [55] Barnes & Noble Nook Color devices also require a special charger that runs at 1.9 A. [108]
A simple charger typically does not alter its output based on charging time or the charge on the battery. This simplicity means that a simple charger is inexpensive, but there are tradeoffs. Typically, a carefully designed simple charger takes longer to charge a battery because it is set to use a lower (i.e., safer) charging rate.
Trickle charging is the process of charging a fully charged battery at a rate equal to its self-discharge rate, enabling the battery to remain at its fully charged level. This state occurs almost exclusively when the battery is not loaded, as trickle charging will not keep a battery charged if current is being drawn by a load.
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Although the nominal voltage of a 12 V lead acid battery is 12 V DC, when the engine is running the car's battery charging system will bring the system voltage to 13.8 V DC or higher. [10] The possible range of battery voltages from 11–15 V DC must be taken into account by devices attached to the cigar lighter socket.